Mathematics are well and good but Nature keeps dragging us around by the nose.
Watch the stars, and from them learn.
If they want to see me, here I am. If they want to see my clothes, open my closet and show them my suits.
Nuclear power is one hell of a way to boil water
Knowledge is dead; the school, however, serves the living.
Physics is an attempt conceptually to grasp reality as something that is considered to be independent of its being observed. In this sense one speaks of physical reality.