Sexual passion is the cause of war and the end of peace, the basis of what is serious... and consequently the concentration of all desire

If anyone spends almost the whole day in reading...he gradually loses the capacity for thinking...This is the case with many learned persons; they have read themselves stupid

To desire immortality is to desire the eternal perpetuation of a great mistake

History is the long, difficult and confused dream of Mankind.

Life is neither to be wept over nor to be laughed at but to be understood.

Happiness belongs to those who are sufficient unto themselves. For all external sources of happiness and pleasure are, by their very nature, highly uncertain, precarious, ephemeral and subject to chance.

That which knows all things and is known by none is the subject.