Thucydides

"The price of greatness is responsibility."

"Those who believe themselves invincible are most vulnerable."

"In the face of uncertainty, we must act with conviction."

"The weakness of the strong is their contempt for danger."

"Truth is the daughter of time."

"The art of life is in the constant readjustment to our surroundings."

"Wisdom is not found in books alone but in the observation of men."

"The greatest deception is self-deception."

"Those who are most in need often suffer the most from the blindness of the powerful."

"The tongue of man is his greatest weapon and his worst enemy."

"In the domain of human action, the element of chance remains forever."

"Despotism requires no encouragement but the apathy of the people."

"The measure of a man is not his wealth but his character."

"To know oneself is the beginning of wisdom."

"The heart of the wise chooses the path of restraint."

"Those who govern must understand the hearts of those they govern."

"Success belongs to those who refuse to accept defeat."

"The love of peace and the fear of war are not always compatible."

"In matters of state, sentiment must yield to necessity."

"The unprepared perish first in the test of circumstance."

"Flattery is the food of fools."

"The strong are often merciful to those they could easily destroy."

"In adversity, the true nature of men is revealed."

"Those who love peace must be prepared for war."

"The greatest folly is to believe oneself infallible."

"Time has a way of vindicating the just."

"The pursuit of power corrupts the character of even the best men."

"In the crucible of conflict, the weak are separated from the strong."

"The mind that doubts itself is already half defeated."

"Those who refuse to learn from history are condemned to repeat it."