Whatever is preached to us, and whatever we learn, we should still remember that it is man that gives, and man that receives; it is a mortal hand that presents it to us, it is a mortal hand that accepts it.

When I express my opinions it is so as to reveal the measure of my sight not the measure of the thing.

The honor we receive from those that fear us, is not honor; those respects are paid to royalty and not to me.

Those that will combat use and custom by the strict rules of grammar do but jest

If atoms do, by chance, happen to combine themselves into so many shapes, why have they never combined together to form a house or a slipper? By the same token, why do we not believe that if innumerable letters of the Greek alphabet were poured all over the market-place they would eventually happen to form the text of the Iliad?

Habit is second nature.

We must not attach knowledge to the mind, we have to incorporate it there.