Albert Einstein - Knowledge of what is does not open the door directly...

Knowledge of what is does not open the door directly to what should be. If one asks the whence derives the authority of fundamental ends, since they cannot be stated and justifed merely by reason, one can only answer: they exist in a healthy society as powerful traditions, which act upon the conduct and aspirations and judgements of the individuals; they are there, that is, as something living, without its being necessary to find justification for their existence. They come into being not through demonstration but through revelation, through the medium of powerful personalities. One must not attempt to justify them, but rather to sense their nature simply and clearly.