Nothing is easier than to admit in words the truth of the universal struggle for life, or more difficult--at least I have found it so--than constantly to bear this conclusion in mind.
A man who dares to waste one hour of time has not discovered the value of life.
Man tends to increase at a greater rate than his means of subsistence.
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 very essence of instinct is that it's followed independently of reason.
