Without books, I would certainly die.
When we get piled upon one another in large cities, as in Europe, we shall become as corrupt as Europe.
The natural cause of the human mind is certainly from credulity to skepticism.
Preachers dread the advance of science as witches do the approach of daylight.
The order of nature [is] that individual happiness shall be inseparable from the practice of virtue.
Leave no authority existing not responsible to the people.