Scientific greatness is less a matter of intelligence than character; if the scientist refuses to compromise or accept incomplete answers and persists in grappling the most basic and difficult questions.
Albert EinsteinMost teachers waste their time by asking question which are intended to discover what a pupil does not know whereas the true art of questioning has for its purpose to discover what pupils knows or is capable of knowing.
Albert EinsteinWhat physics looks for: The simplest possible system of thought which will bind together the observed facts.
Albert Einstein