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

“We dress our garden, eat our dinners, discuss the household with our wives, and these things make no impression, are forgotten next week; but in the solitude to which every man is always returning, he has a sanity and revelations, which in his passage into new worlds he will carry with him. Never mind the ridicule, never mind the defeat: up again, old heart! — it seems to say, — there is victory yet for all justice; and the true romance which the world exists to realize, will be the transformation of genius into practical power.”

“So shall we come to look at the world with new eyes. It shall answer the endless inquiry of the intellect, — What is truth? and of the affections, — What is good? by yielding itself passive to the educated Will. ... Build, therefore, your own world. As fast as you conform your life to the pure idea in your mind, that will unfold its great proportions. A correspondent revolution in things will attend the influx of the spirit.”

“The key to every man is his thought. Sturdy and defying though he look, he has a helm which he obeys, which is the idea after which all his facts are classified. He can only be reformed by showing him a new idea which commands his own.”

“Insist upon yourself. Be original.”

“That which we are, we shall teach, not voluntarily, but involuntarily. Thoughts come into our minds by avenues which we never left open, and thoughts go out of our minds through avenues which we never voluntarily opened.”

“Nothing in nature is exhausted in its first use...In God, every end is converted into a new means.”