Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.
Albert EinsteinThis has been done elegantly by Minkowski; but chalk is cheaper than grey matter, and we will do it as it comes.
Albert EinsteinThough our conduct seems so very different from that of the higher animals, the primary instincts are much alike in them and in us.
Albert Einstein