The society that separates its scholars from its warriors will have its thinking done by cowards and its fighting by fools.
And their judgment was based more upon blind wishing than upon any sound prediction; for it is a habit of mankind to entrust to careless hope what they long for, and to use sovereign reason to thrust aside what they do not desire.
Right, as the world goes, is only in question between equals in power, while the strong do what they can and the weak suffer what they must.
History is Philosophy teaching by example.
Think, too, of the great part that is played by the unpredictable in war: think of it now, before you are actually comitted to war. The longer a war lasts, the more things tend to depend on accidents. Neither you nor we can see into them: we have to abide their outcome in the dark. And when people are entering upon a war they do things the wrong way round. Action comes first, and it is only when they have already suffered that they begin to think.
Justice will not come to Athens until those who are not injured are as indignant as those who are injured.
Words had to change their ordinary meaning and to take that which was now given them. Reckless audacity came to be considered the courage of a loyal supporter; prudent hesitation, specious cowardice; moderation was held to be a cloak for unmanliness; ability to see all sides of a question incapacity to act on any. Frantic violence became the attribute of manliness; cautious plotting a justifiable means of self-defense.  The advocate of extreme measures was always trustworthy; his opponent a man to be suspected. To succeed in a plot was to have a shrewd head, to divine a plot a still shrewder; but to try to provide against having to do either was to break up your party and to be afraid of your adversaries. In short, to forestall an intending criminal, or to suggest the idea of a crime where it was lacking was equally commended,  until even blood became a weaker tie than party, from the superior readiness of those united by the latter to dare everything without reserve; for such associations sought not the blessings derivable from established institutions but were formed by ambition to overthrow them; and the confidence of their members in each other rested less on any religious sanction than upon complicity in crime.
And yet, Lacedaemonians, you still delay, and fail to see that peace stays longest with those, who are not more careful to use their power justly than to show their determination not to submit to injustice. On the contrary, your ideal of fair dealing is based on the principle that, if you do not injure others, you need not risk your own fortunes in preventing others from injuring you.
Self-control is the chief element in self-respect, and self-respect is the chief element in courage.
I think the two things most opposed to good counsel are haste and passion; haste usaully goes hand in hand with folly, passion with coarseness and narrowness of mind.
Three of the greatest failings, want of sense, of courage, or of vigilance.
Mankind are tolerant of the praises of others as long as each hearer thinks that he can do as well or nearly as well himself, but, when the speaker rises above him, jealousy is aroused and he begins to be incredulous.