Since I have introduced this term I had always a bad conscience. . . . I cannot help to feel it strongly and I am unable to believe that such an ugly thing should be realized in nature.
Albert EinsteinAgreements about what is good or not, are usually not worth much. It is very much like art, is it not an art to lead a good life?
Albert EinsteinThe great need to grasp principles had caused me to spend most of my time on fruitless persuits.
Albert Einstein