It is not more surprising to be born twice than once; everything in nature is resurrection.

The system of Descartes... seemed to give a plausible reason for all those phenomena; and this reason seemed more just, as it is simple and intelligible to all capacities. But in philosophy, a student ought to doubt of the things he fancies he understands too easily, as much as of those he does not understand.

Of all religions, Christianity is without a doubt the one that should inspire tolerance most

Every one should be his own physician. We ought to assist, and not to force nature. Eat with moderation...Nothing is good for the body but what we can digest. What medicine can procure digestion? Exercise. What will recruit strength? Sleep.

I should like to lie at your feet and die in your arms.

The only way to comprehend what mathematicians mean by Infinity is to contemplate the extent of human stupidity.

my soul is the mirror of the universe, and my body is its frame