It is only prudent never to place complete confidence in that by which we have even once been deceived. Rene Descartes
When a person cannot deceive himself the chances are against his being able to deceive other people. Mark Twain
Unlike grown ups, children have little need to deceive themselves. Johann Wolfgang von Goethe Children
The senses deceive from time to time, and it is prudent never to trust wholly those who have deceived us even once. Rene Descartes
A woman one loves rarely suffices for all our needs, so we deceive her with another whom we do not love. Marcel Proust
Do not let a flattering woman coax and wheedle you and deceive you; she is after your barn. Hesiod Woman