Books, says Lord Bacon, can never teach us the use of books; the student must learn by commerce with mankind to reduce his speculations to practice. No man should think so highly of himself as to think he can receive but little light from books; no one so meanly, as to believe he can discover nothing but what is to be learned from them.

Questioning is not the mode of conversation among gentlemen.

There are innumerable questions to which the inquisitive mind can in this state receive no answer: Why do you and I exist? Why was this world created? Since it was to be created, why was it not created sooner?

The applause of a single human being is of great consequence.

Levellers wish to level down as far as themselves; but they cannot bear levelling up to themselves.

Courage is the greatest of all virtues, because if you haven't courage, you may not have an opportunity to use any of the others.

Human experience, which is constantly contradicting theory, is the great test of truth. A system, built upon the discoveries of a great many minds, is always of more strength, than what is produced by the mere workings of any one mind, which, of itself, can do very little. There is not so poor a book in the world that would not be a prodigious effort were it wrought out entirely by a single mind, without the aid of prior investigators.