We will now discuss in a little more detail the struggle for existence.
It is always advisable to perceive clearly our ignorance.
I am not the least afraid to die.
Great is the power of steady misrepresentation.
Blushing is the most peculiar and most human of all expressions.
The love for all living creatures is the most noble attribute of man.
I am not apt to follow blindly the lead of other men.
How paramount the future is to the present when one is surrounded by children.
Man tends to increase at a greater rate than his means of subsistence.
Man is descended from a hairy, tailed quadruped, probably arboreal in its habits.
A scientific man ought to have no wishes, no affections, - a mere heart of stone.
It is a cursed evil to any man to become as absorbed in any subject as I am in mine.
The very essence of instinct is that it's followed independently of reason.
Animals, whom we have made our slaves, we do not like to consider our equal.
A man who dares to waste one hour of time has not discovered the value of life.
A man's friendships are one of the best measures of his worth.