“A habitual indulgence in the inarticulate is a sure sign of the philosopher who has not learned to think, the poet who has not learned to write, the painter who has not learned to paint, and the impression that has not learned to express itself--all of which are compatible with an immensity of genius in the inexpressible soul.”

“The wisest mind has something yet to learn.”

“The wisest man has something yet to learn.”

“Progress, far from consisting in change, depends on retentiveness. When change is absolute there remains no being to improve and no direction is set for possible improvement: and when experience is not retained, as among savages, infancy is perpetual. Those who cannot remember the past are condemned to repeat it. In the first stage of life the mind is frivolous and easily distracted; it misses progress by failing in consecutiveness and persistence. This is the condition of children and barbarians, in which instinct has learned nothing from experience.”

“The wisest mind hath something yet to learn.”

“To be happy you must have taken the measure of your powers, tasted the fruits of your passion, and learned your place in the world.”

“There was a distinct class of these gentlemen tramps, young men no longer young, who wouldn't settle down, who disliked polite society and the genteel conventions, but hadn't enough intelligence or enough conceit to think themselves transcendentalists or poets, in the style of Thoreau or of Walt Whitman.”