The history of human opinion is scarcely anything more than the history of human errors.
If you wish to obtain a great name or to found an establishment, be completely mad; but be sure that your madness corresponds with the turn and temper of your age.
Philosopher: A lover of wisdom, which is to say, Truth.
There are truths which are not for all men, nor for all times.
Doubt is uncomfortable, certainty is ridiculous.
Liberty of thought is the life of the soul.