Our experience is composed rather of illusions lost than of wisdom acquired.
Science is for those who learn; poetry, for those who know.
No labor is hopeless.
History, if thoroughly comprehended, furnishes something of the experience which a man would acquire who should be a contemporary of all ages and a fellow citizen of all peoples.
When unhappy, one doubts everything when happy one doubts nothing.
We love justice greatly, and just men but little.