John Caius

Moral indignation is jealousy with a halo. (H. G. Wells)

When one person suffers from a delusion it is called insanity; when many people suffer from a delusion it is called religion. (Robert Pirsig)

Each problem that I solved became a rule which served afterwards to solve other problems. (Rene Descartes, Discours de la Methode)

The full use of your powers along lines of excellence. (definition of happiness by John F. Kennedy)

You can only find truth with logic if you have already found truth without it. (Gilbert Keith Chesterton)