"The mind, once stretched by a new idea, never returns to its original dimensions."

"We are students of words: we are shut up in schools, and colleges, and recitation-rooms, for ten or fifteen years, and come out at last with a bag of wind, a memory of words, and do not know a thing."

"I have a great deal of curiosity, and very little patience."

"The health of the eye demands a horizon. We are never tired, so long as we can see far enough."

"To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment."