To understand via the heart is not to understand.

Obstinacy and dogmatism are the surest signs of stupidity. Is there anything more confident, resolute, disdainful, grave and serious than an ass?

It is not my deeds that I write down, it is myself, my essence.

Fortune, to show us her power in all things, and to abate our presumption, seeing she could not make fools wise, has made them fortunate.

'Tis the sharpness of our mind that gives the edge to our pains and pleasures.

Men ... are not agreed about any one thing, not even that heaven is over our heads.

To philosophize is to doubt.