“No book is really worth reading at the age of 10 which is not equally worth reading at the age of 50.”

“The life of my people is to remember forever; each head granary is full. The life of your people is to forget: your thing granaries ("museums"), and not yourselves, are full.”

“We are now in the mountains and they are in us, kindling enthusiasm, making every nerve quiver, filling every pore and cell of us.”

“The living sinners on deadly ground.”

“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.”