The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.
Albert EinsteinHeroism on command, senseless violence, and all the loathsome nonsense that goes by the name of patriotism - how passionately I hate them!
Albert EinsteinThe theoretical idea ... does not arise apart from and independent of experience; nor can it be derived from experience by a purely logical procedure. It is produced by a creative act. Once a theoretical idea has been acquired, one does well to hold fast to it until it leads to an untenable conclusion.
Albert Einstein