Peace is not an absence of war, it is a virtue, a state of mind, a disposition for benevolence, confidence, justice.
All things excellent are as difficult as they are rare.
I have striven not to laugh at human actions, not to weep at them, nor to hate them, but to understand them.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
All happiness or unhappiness solely depends upon the quality of the object to which we are attached by love.
The world would be happier if men had the same capacity to be silent that they have to speak.
If you want the present to be different from the past, study the past.
Do not weep; do not wax indignant. Understand.
Be not astonished at new ideas; for it is well known to you that a thing does not therefore cease to be true because it is not accepted by many.
I do not know how to teach philosophy without becoming a disturber of established religion.