History is Philosophy teaching by example.

Indeed men too often take upon themselves in the prosecution of their revenge to set the example of doing away with those general laws to which all can look for salvation in adversity, instead of allowing them to subsist against the day of danger when their aid may be required

The Peloponnesian War turns out to be no dry chronicle of abstract cause and effect. No, it is above all an intense, riveting, and timeless story of strong and weak men, of heroes and scoundrels and innocents too, all caught in the fateful circumstances of rebellion, plague, and war that always strip away the veneer of culture and show us for what we really are.

Three of the gravest failings, want of sense, of courage, or of vigilance.

Mankind apparently find it easier to drive away adversity than to retain prosperity.

Human nature is the one constant through human history. It is always there.

If it had not been for the pernicious power of envy, men would not so have exalted vengeance above innocence and profit above justice... in these acts of revenge on others, men take it upon themselves to begin the process of repealing those general laws of humanity which are there to give a hope of salvation to all who are in distress.