We learn more by looking for the answer to a question and not finding it than we do from learning the answer itself.

A shade of sorrow passed over Taliesin's face. 'There are those,' he said gently, 'who must first learn loss, despair, and grief. Of all paths to wisdom, this is the cruelest and longest. Are you one who must follow such a way? This even I cannot know. If you are, take heart nonetheless. Those who reach the end do more than gain wisdom. As rough wool becomes cloth, and crude clay a vessel, so do they change and fashion wisdom for others, and what they give back is greater than what they won.

Some people will never learn anything, for this reason, because they understand everything too soon.

A little learning is a dangerous thing.

Anyone who wishes to learn how to play chess well must make himself or herself thoroughly conversant with the play in positions where the players have castled on opposite sides.

It's a key part of the experience. It's all the learning that goes on outside the classroom, sports, debate, discussions in the dorm room.