Human nature is so constituted, that all see and judge better in the affairs of other men than in their own

Strange indeed is human nature. Here were these men, to whom murder was familiar, who again and again had struck down the father of the family, some man against whom they had no personal feeling, without one thought of compunction or of compassion for his weeping wife or helpless children, and yet the tender or pathetic in music could move them to tears.

The more we study human nature, the less we think of men - the more of man

What is government itself but the greatest of all reflections on human nature? If men were angels, no government would be necessary. If angels were to govern men, neither external nor internal controls on government would be necessary.

His works (taken together) are almost like a new edition of human nature.

There is a hearty Puritanism in the view of human nature which pervades the instrument of 1787 It is the work of men who believed in original sin, and were resolved to leave open for transgressors no door which they could possibly shut.