The true lover of knowledge naturally strives for truth, and is not content with common opinion, but soars with undimmed and unwearied passion till he grasps the essential nature of things.
PlatoHe who is learning and learning and doesn't apply what he knows is like the one who is plowing and plowing and doesn't seed.
PlatoThere will be no end to the troubles of states,Or of humanity itself,Till philosophers become kings in this world,Or till those we now call kings and rulers really And truly become philosophers
Plato