The most interesting thing in the world is another human being who wonders, suffers and raises the questions that have bothered him to the last day of his life, knowing he will never get the answers.
Civilization exists by geological consent, subject to change without notice.
There have been only 268 of the past 3,421 years free of war.
Education is a progressive discovery of our own ignorance.
The trouble with most people is that they think with their hopes or fears or wishes rather than with their minds.
Every form of government tends to perish by excess of its basic principle.
Woe to him who teaches men faster than they can learn.
Inquiry is fatal to certainty.
History is mostly guessing; the rest is prejudice.
The love we have in our youth is superficial compared to the love that an old man has for his old wife.