Fear is religion, courage is science.

Argument cannot be answered with insults. Kindness is strength; anger blows out the lamp of the mind.

If we should put god in the Constitution there would be no room left for man.

It is an old habit with theologians to beat the living with the bones of the dead.

Intelligence is the only moral guide.

It may be that ministers really think that their prayers do good, and it may be that frogs imagine that their croaking brings spring.

Every human being should be taught that his first duty is to take care of himself, and that to be self-respecting he must be self-supporting. To live on the labor of others, either by force which enslaves, or by cunning which robs, or by borrowing or begging, is wholly dishonorable. Every man should be taught some useful art.