Keep your minds open, but not so open that your brains fall out. – Walter Kotschnig, c.1940

The only man I know who behaves sensibly is my tailor; he takes my measurements anew each time he sees me. The rest go on with their old measurements and expect me to fit them. – George Bernard Shaw

Believe nothing, no matter where you read it, or who said it — even if I have said it — unless it agrees with your own reason and your own common sense. – Buddha

Conservatism should guide; it usually paralyzes. – Martin H. Fischer (1879–1962)