A great nation is any mob of people which produces at least one honest man a century.

All [zoos] actually offer to the public in return for the taxes spent upon them is a form of idle and witless amusement, compared to which a visit to a penitentiary, or even to a State legislature in session, is informing, stimulating and ennobling.

For every problem, there is a solution that is simple, neat, and wrong.

It is the natural tendency of the ignorant to believe what is not true. In order to overcome that tendency it is not sufficient to exhibit the true; it is also necessary to expose and denounce the false.

A man who knows a subject thoroughly, a man so soaked in it that he eats it, sleeps it and dreams it- this man can always teach it with success, no matter how little he knows of technical pedagogy.

I am against slavery simply because I dislike slaves.

A man full of faith is simply one who has lost the capacity for clear and realistic thought.