Wonder is the foundation of all philosophy; research, the progress; ignorance, the end. There is, by heavens, a strong and generous kind of ignorance that yields nothing, for honour and courage, to knowledge: an ignorance to conceive which needs no less knowledge than to conceive knowledge.

No one but yourself knows whether you are cowardly and cruel, or loyal and devout; others do not see you; they surmise you by uncertain conjectures; they perceive not so much your nature as your art.

Since philosophy is the art which teaches us how to live, and since children need to learn it as much as we do at other ages, why do we not instruct them in it?

If my intentions were not to be read in my eyes and voice, I should not have survived so long without quarrels and without harm, seeing the indiscreet freedom with which I say, right or wrong, whatever comes into my head.

The corruption of the age is made up by the particular contribution of every individual man; some contribute treachery, others injustice, atheism, tyranny, avarice, cruelty, according to their power.

My business is only to keep myself in motion, whilst motion pleases me; I only walk for the walk's sake.

To smell, though well, is to stink.