“There is advantage in the wisdom won from pain.”

“There is no treasure but Truth, there is no Truth but Wisdom. There is no Wisdom, but from Learning, and Learning is won by the devotion of hours, years, days and nights to the works of Nature and the Treasures of Truth that others have gathered.”

“From the cradle to the grave, joy and pain is the fertilizer for wisdom.”

“I see at last that all the knowledgeI wrung from the darkness—that the darkness flung me—Is worthless as ignorance: nothing comes from nothing,The darkness from the darkness. Pain comes from the darknessAnd we call it wisdom. It is pain.”

“I see at least that all knowledge I wrung from the darkness-- that the darkness flung me-- is worthless as ignorance: nothing comes from nothing, the darkness from the darkness. Pain comes from the darkness and we call it wisdom. It is pain.”

“Mistakes are the growing pains of wisdom.”