The science of constructing a commonwealth or renovating it, or reforming it, is...not to be taught a priori...That which in the first instance is prejudicial may be excellent in its remoter operation, and its excellence may rise even from the ill effects it produces in the beginning. The reverse also happens; and very plausible schemes, with very pleasing commencements, have often shameful and lamentable conclusions.

Wars are just to those to whom they are necessary.

Never despair, but if you do, work on in despair.

It is from this absolute indifference and tranquillity of the mind, that mathematical speculations derive some of the most considerable advantages; because there is nothing to interest the imagination; because the judgment sits free and unbiased to examine the point. All proportions, every arrangement of quantity, is alike to the understanding, because the same truths result to it from all; from greater from lesser, from equality and inequality.

We must all obey the great law of change. It is the most powerful law of nature.

By the disposition of a stupendous wisdom, moulding together the great mysterious incorporation of the human race, the whole, at one time, is never old, or middle-aged, or young; but, in a condition of unchangeable constancy, moves on through the varied tenor of perpetual decay, fall, renovation, and progression.

It is known that the taste--whatever it is--is improved exactly as we improve our judgment, by extending our knowledge, by a steady attention to our object, and by frequent exercise.