The highest possible stage in moral culture is when we recognize that we ought to control our thoughts.
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.
A moral being is one who is capable of reflecting on his past actions and their motives - of approving of some and disapproving of others.
Animals, whom we have made our slaves, we do not like to consider our equal.
How paramount the future is to the present when one is surrounded by children.
I have called this principle, by which each slight variation, if useful, is preserved, by the term of Natural Selection.
The mystery of the beginning of all things is insoluble by us; and I for one must be content to remain an agnostic.
A man's friendships are one of the best measures of his worth.
An American monkey, after getting drunk on brandy, would never touch it again, and thus is much wiser than most men.
A man who dares to waste one hour of time has not discovered the value of life.
Share this top 10 list!