The highest stage in moral ure at which we can arrive is when we recognize that we ought to control our thoughts.
If the misery of the poor be caused not by the laws of nature, but by our institutions, great is our sin.
A man's friendships are one of the best measures of his worth.
I love fools' experiments. I am always making them.
A man who dares to waste one hour of time has not discovered the value of life.
The very essence of instinct is that it's followed independently of reason.
An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.
At some future period, not very distant as measured by centuries, the civilized races of man will almost certainly exterminate, and replace the savage races throughout the world.
How paramount the future is to the present when one is surrounded by children.
Ignorance more frequently begets confidence than does knowledge: it is those who know little, and not those who know much, who so positively assert that this or that problem will never be solved by science.
