Wisdom is not found with those who dwell at their ease; rather nature, when she adds brain, adds difficulty.

Keep your friendships in repair.

Every burned book enlightens the world.

Meek young men grow up in libraries, believing it their duty to accept the views which Cicero, which Locke, which Bacon, have given, forgetful that Cicero, Locke, and Bacon were only young men in libraries, when they wrote these books.

Manners require time, and nothing is more vulgar than haste.

It is, in both cases, that a spiritual life has been imparted to nature; that the solid seeming block of matter has been pervadedand dissolved by a thought; that this feeble human being has penetrated the vast masses of nature with an informing soul, and recognised itself in their harmony, that is, seized their law. In physics, when this is attained, the memory disburthens itself of its cumbrous catalogues of particulars, and carries centuries of observation in a single formula.

If thou fill thy brain with Boston and New York, with fashion and covetousness, and wilt stimulate thy jaded senses with wine and French coffee, thou shalt find no radiance of wisdom in the lonely waste of the pinewoods.