Teaching should be such that what is offered is perceived as a valuable gift and not as hard duty. Never regard study as duty but as the enviable opportunity to learn to know the liberating influence of beauty in the realm of the spirit for your own personal joy and to the profit of the community to which your later work belongs.

Imagination encircles the world.

If I would follow your advice and Jesus could perceive it, he, as a Jewish teacher, surely would not approve of such behavior.

The question that drives me hazy is whether it is I or others who is crazy.

A tyranny based on ... deception and maintained by terror must inevitably perish from the poison it generates within itself.

A conviction akin to religious feeling of the rationality or intelligibility of the world lies behind all scientific work of a high order.

Science will stagnate if it is made to serve practical goals.