Authors with quote category Knowledge Denis Waitley writer Denis Diderot philosopher Deepak Chopra author Dee Hock Daymond John entrepreneur David Weinberger author David Soul actor David Sarnoff businessman David Sainsbury, Baron Sainsbury of Turville british-politician David Moyes football-manager David McCullough author David Longstreth David J. Schwartz motivational-writer David Hume philosopher David H. Murdock businessman David Douglass physicist David Crosby guitarist David Christian historian David Cheriton professor David Byrne musician «678910111213141516»