“Beware when the great God lets loose a thinker on this planet. Then all things are at risk. It is as when a conflagration has broken out in a great city, and no man knows what is safe, or where it will end. There is not a piece of science, but its flank may be turned to-morrow; there is not any literary reputation, not the so-called eternal names of fame, that may not be revised and condemned. The very hopes of man, the thoughts of his heart, the religion of nations, the manner and morals of mankind, are all at the mercy of a new generalization. Generalization is always a new influx of the divinity into the mind. Hence the thrill that attends it.”

“Valor consists in the power of self-recovery, so that a man cannot have his flank turned, cannot be out-generalled, but put him where you will, he stands. This can only be by his preferring truth to his past apprehension of truth; and his alert acceptance of it, from whatever quarter; the intrepid conviction that his laws, his relations to society, his Christianity, his world may at any time be superseded and decease.”

“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.”

“Nature is a language and every new fact one learns is a new word; but it is not a language taken to pieces and dead in the dictionary, but the language put together into a most significant and universal sense. I wish to learn this language--not that I may know a new grammar, but that I may read the great book which is written in that tongue.”

“It is a secret which every intellectual man quickly learns, that, beyond the energy of his possessed and conscious intellect, he is capable of a new energy (as of an intellect doubled on itself), by abandonment to the nature of things; that, beside his privacy of power as an individual man, there is a great public power, on which he can draw, by unlocking, at all risks, his human doors, and suffering the ethereal tides to roll and circulate through him: then is he caught up into the life of the Universe, his speech is thunder, his thought is law, and his words are universally intelligible as the plants and animals.”

“What is the scholar, what is the man for, but for hospitality to every new thought of his time? Have you leisure, power, property, friends? you shall be the asylum and patron of every new thought, every unproven opinion, every untried project, which proceeds out of good will and honest seeking. All the newspapers, all the tongues of to-day will of course at first defame what is noble; but you who hold not of to-day, not of the times, but of the Everlasting, are to stand for it: and the highest compliment, man ever receives from heaven, is the sending to him its disguised and discredited angels.”

“Conversation is an art in which a man has all mankind for his competitors, for it is that which all are practising every day while they live.”