The reward of esteem, respect and gratitude [is] due to those who devote their time and efforts to render the youths of every successive age fit governors for the next.

Delay is preferable to error.

The true fountains of evidence [are] the head and heart of every rational and honest man. It is there nature has written her moral laws, and where every man may read them for himself.

Certain teachings in the Bible are as diamonds in a dung-heap.

How much pain they have cost us, the evils which have never happened.

I do not pretend that language is science. It isan instrument for the attainment of science.

Question boldly even the existence of God.