"It is not enough to have a good mind; the main thing is to use it well." ― Rene Descartes Topic(s): Good More From Rene Descartes "Each problem that I solved became a rule, which served afterwards to solve other problems." "I am indeed amazed when I consider how weak my mind is and how prone to error." "The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once." More In Good "I am glad that I paid so little attention to good advice; had I abided by it I might have been saved from some of my most valuable mistakes."― Edna St. Vincent Millay "Good breeding consists in concealing how much we think of ourselves and how little we think of the other person."― Mark Twain "My dad was an entrepreneurial businessman, and maybe I got some of his ability."― Thomas Jane