“The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives.”

“[I]sn't it sad to go to your grave without ever wondering why you were born? Who, with such a thought, would not spring from bed, eager to resume discovering the world and rejoicing to be part of it?”

“I have not yet lost a feeling of wonder, and of delight, that the delicate motion should reside in all the things around us, revealing itself only to him who looks for it.”