When men have realized that time has upset many fighting faiths, they may come to believe... that the ultimate good desired is better reached by free trade in ideas-- that the best test of truth is the power of the thought to get itself accepted in the competition of the market, and that truth is the only ground upon which their wishes safely can be carried out. That at any rate is the theory of our Constitution. It is an experiment. As all life is an experiment. Every year if not every day we wager our salvation upon some prophecy based upon imperfect knowledge.

Whatever comes from the brain carries the hue of the place it came from, and whatever comes from the heart carries the heat and color of its birthplace.

The truth is that the whole system of beliefs which comes in with the story of the fall of man ... is gently falling out of enlightened human intelligence.

Controversy equalizes fools and wise men in the same way - and the fools know it.

The man who is always worrying about whether or not his soul would be damned generally has a soul that isn't worth a damn.

Youth fades, love droops, the leaves of friendship fall; A mother's secret hope outlives them all.

Cupid "the little greatest enemy."