In a series of lectures / essays addressing the history of Western ideas, as well as the interplay of philosophy and religion, Strauss makes the case for the primacy of political thought as a bulwark against tyranny and argues the main threat is liberalism’s crisis of confidence. Strauss also recurs to the practice of political philosophy itself.

On practice of philosophy:
• Philosophy begins when the quest for origins is to understood in light of nature, not myth. The gods are the engine by which man believes he can control chance. By contrast, Christian religion prompts one to search inside oneself
• Philosophy is the highest end of political life, for it seeks to answer the question of what is virtue? and to supply practical references; however, the philosopher has to understand things as they are understood in the political community. It has no independent justification
• The poet imitates the legislator in seeking justice, but acts the valet, according to Nietzsche. Plato, to the contrary, says the poet possesses genuine knowledge of the soul. In this sense philosophy is psychology; however, modern psychology and sociology (which do not seek to distinguish between the noble and the base) cannot articulate a higher purpose for life. Thus philosophy, which works by logic, and poetry, which acts by demonstration, are more similar, seeking a solution to the problem of happiness. But philosophy is concerned with all things (the whole); poetry (especially as tragedy) prepares men for the philosophic life
• Aristocracy is the form of government in which the virtuous don’t have to compromise with democratic predilections for common behaviors
• Socrates is the philosophic model, the ‘loving skeptic’. The Socratic dialogue is the main vehicle for classical ideals of civic virtue and justice, the Socratic model is the highest possibility of liberalism
• Dialectic is skill in conversation: Socrates used ‘what if?’ when contradicted, proceeded to general opinions when unchallenged, each in pursuit of consensual agreement (if not truth)
• Rational philosophy is guided by the distinction between objective (true) and subjective. Existentialism says what was objective is superficial and problematic (debatable), and what was subjective is profound but not demonstrable. It rejects a return to metaphysics
• There may be many ways to understand an author, but only one way to understand him as he understood himself

On the sequence of political thinking:
• The ancients were not addressing intelligent men but decent men, and sought to settle controversy in a kind way for the good citizen. No intellectual effort is required to grasp ordinary morality, which consists of doing, whereas the highest morality – virtue – is knowledge
• After Socrates, history exemplifies the precepts of political philosophy. And history remains political history because statesmanship and legislation are the one thing needful. Politics is not the highest but is first (i.e., most urgent), because human things are close to the nature of all things
• By understanding the Peloponnesian War, Thucydides presents the highest ascent of Greek civilization (i.e., politics) and the fragile character of ancient Greek justice, as against barbarians. The Thucydidean speeches are meant to enlarge the character of the speech, to fill the space between the talk (essence) and deeds (wisdom) of the actors. By understanding Periclean Athens we understand the wisdom of moderation: wisdom cannot be said, only practiced. In the act of pursuing wisdom, Plato qua philosopher emphasizes individual choice (i.e., nature) while Thucydides qua political historian points up fate (i.e., events are too big)
• But contrary to Plato, Thucydides sees virtue as a means. He sees unrest, barbarism, war as the norm, where Plato seeks rest, Greek civilization, peace. Thucydides’ highest is unknown, Plato’s highest is nature’s highest. Thucydides’ cause of Periclean Athens is Periclean Athens, Plato’s Periclean Athens is a condition not the cause. For Thucydides, the highest is fragile, for Plato it is the strongest.
• Plato suggested three parts to the soul: reason, spiritedness, desire. Spirit is deferential to reason whereas desire revolts. Strauss says spiritedness thus links the highest level of man to the lowest, but spirit arises from desire’s being rechanneled
• The Middle Ages was the first era to foster the dialogue between philosophy and religion
• Philosophy is more precarious in Islamic and Jewish society than the Christian West. In these cultures religion is law, and does not admit of science; philosophy is highly private, as it was among the ancient Greeks. This explains the collapse of philosophy in Islam after the Middle Ages
• Aristotle says the paramount requirement of society is stability. The classic of the Christian world was Aristotle’s Politics, in the Jewish world Plato’s Laws and Republic, featuring the prophetic philosopher-king. Nor is there Roman thinking or the natural law is the Islamic and Jewish traditions
• Hume viewed man as the reference to unchanging nature. Logical positivism followed the ‘discovery of history’, which emerged from Kant’s distinction between validity and genesis
• Classical political philosophy did not need to demonstrate the essence of courage, justice, kindness, virtue: it knew these were good. Hegel rejected the ancients for lack of demonstrability
• Heidegger defined ‘to be’ as to exist as man, whereas the ancients saw it as perpetual existence. His sein (‘being’ or ‘essence’) replaces knowledge as the goal of the virtuous life
• There is no universal hermeneutics, no semiotics; all dialogue is localized to context, and rhetoric is further individualized
• Sophistry is related to classical political philosophy as the French Revolution to German idealism, as exemplified by Hegel (?)
• Modernity sees philosophy not in service of truth and good but of society and its ethics. Modernity is unusually quick to dismiss the clams to truth of previous eras
• Modern science is more powerful than ancient science but incapable of suggesting how to use this power because of its aversion to values. It can’t speak of progress but only of change. It no longer aspires to perfection
• Rational conduct means to choose the right means for the right ends. Relativism, because it requires unequivocal causality, is actually a flight from reason. Thus the modern flight from scientific reason is a consequence of science’s flight from reason
• Political science is concerned with the normative, while political philosophy regards the best. The former obsesses over method, the latter umpires competing claims to good and justice. Legislation is the architectural skill of the latter
• The problem with social sciences is not abstraction per se but abstraction from the essential things of human society. Social science is concerned with regular behavior, whereas classical politics is concerned with good government
• Political history supposes freedom and empire as manifestations of power, as mankind’s great objective, but history is now seen to be broader. Philosophy can be seen as mankind’s effort to free himself of the binding premises of civilization or culture, so history now threatens philosophy; historical sequences teach us nothing about values
• The acceptance of the past (the return to historical thinking) is different from unquestioned continuing on the current path – the so-called discovery or engine of history (p233)

On the decline of the West
• Existentialism is historicism rooted in Nietzschean relativism: life-giving truth is subjective; it cannot be the same for all men, all ages. Existentialism is the attempt to break free of Nietzsche’s solution to relativism – ‘relapsing’ to metaphysics or recourse to nature. Existentialism belongs to declining Europe, for it is unsure of its absolutes
• Modern philosophy is anthropocentric, as compared with Biblical theology or Greek cosmography, and tends to regard the human mind. In the 17th century, virtue itself came to be seen as a passion; freedom then took the place of virtue. The good life does not correspond to universal truth but consists of creating an original pattern.
• The rediscovery of classical times points up that Athens and Jerusalem have never been harmonized; but the commonality remains justice-morality-divine or natural law. The spring of Western vitality is the irresolvable tension between philosophy and religion, Athens and Jerusalem
• To combine exactness and comprehensiveness, start at the strategic points
• The well-being of the city depends on law and its observance. Justice is primarily a political goal. The wise rule indirectly through the law; the rule of wisdom is diluted by consent
• The difference between progress, which is a moral claim, and change, which makes no claim to improvement, is a major compromise of the modern West. Good and evil were replaced by progressive and reactionary in the 19th century. This substitution failed once it became obvious there is no motor of history; facts don’t teach anything about values; social sciences can only rationalize; the values of barbarism are as defensible as those of civilization
• The impossibility of Irving Berlin’s grounding the case for liberal freedom (‘inviolable boundaries’) indicates the crisis of liberalism as it moves from an absolutist claim to relativism
• The counter to Heidegger’s nightmarish world society is the individuated, the noble, and the great, which are cultural (i.e., explicit to the nation-state)