Were there none who were discontented with what they have, the world would never reach anything better."

"To understand God's thoughts, we must study statistics, for these are the measure of His purpose."

I think one's feelings waste themselves in words; they ought all to be distilled into actions which bring results.

I attribute my success to this -- I never gave or took any excuse.

The world is put back by the death of every one who has to sacrifice the development of his or her peculiar gifts to conventionality.