I know that I have lived because I have felt, and, feeling giving me the knowledge of my existence, I know likewise that I shall exist no more when I shall have ceased to feel.

I have felt in my very blood, ever since I was born, a most unconquerable hatred towards the whole tribe of fools, and it arises from the fact that I feel myself a blockhead whenever I am in their company.

Should I perchance still feel after my death, I would no longer have any doubt, but I would most certainly give the lie to anyone asserting before me that I was dead.

For my future I have no concern, and as a true philosopher, I never would have any, for I know not what it may be: as a Christian, on the other hand, faith must believe without discussion, and the stronger it is, the more it keeps silent.

The mind of a human being is formed only of comparisons made in order to examine analogies, and therefore cannot precede the existence of memory.

I am bound to add that the excess in too little has ever proved in me more dangerous than the excess in too much; the last may cause indigestion, but the first causes death.