Everything that the human race has done and thought is concerned with the satisfaction of deeply felt needs and the assuagement of pain. One has to keep this constantly in mind if one wishes to understand spiritual movements and their development. Feeling and longing are the motive force behind all human endeavor and human creation, in however exalted a guise the latter may present themselves to us.
Albert EinsteinHunger, love, pain, fear are some of those inner forces which rule the individual's instinct for self preservation.
Albert EinsteinFrom the standpoint of daily life, however, there is one thing we do know: that we are here for the sake of each other.
Albert Einstein