To mistake money for wealth, is the same sort of error as to mistake the highway which may be the easiest way of getting to your house or lands, for the house and lands themselves.

Men are men before they are lawyers, or physicians, or merchants, or manufacturers; and if you make them capable and sensible men, they will make themselves capable and sensible lawyers or physicians.

There is a tolerably general agreement about what a university is not. It is not a place of professional education.

The successful conduct of an industrial enterprise requires two quite distinct qualifications: fidelity and zeal.

He must be able to hear them [the counter arguments] from persons who actually believe them; who defend them in earnest, and do their very utmost for them. He must know them in their most plausible and persuasive form; he must feel the whole force of the difficulty which the true view of the subject has to encounter and dispose of; else he will never really possess himself of the portion of truth which meets and removes that difficulty.

Popular opinions, on subjects not palpable to sense, are often true, but seldom or never the whole truth.

The philosophy of reasoning, to be complete, ought to comprise the theory of bad as well as of good reasoning.