I have always considered it as treason against the great republic of human nature, to make any man's virtues the means of deceiving him.

I have a deep fascination with human nature, with all its virtues and all its defects.

Nothing in human nature is so God-like as the disposition to do good to our fellow-creatures.

England has always been disinclined to accept human nature.

He who has so little knowledge of human nature as to seek happiness by changing anything but his own disposition will waste his life in fruitless efforts.

There will always be cheaters. It is human nature. It will never be 100 percent clean, in any sport.