The scientific nature of the ordinary man is to go out and do the best you can.

It's generally human nature to overestimate risk and underestimate opportunity.

Many a one commits a reprehensible action, who is at bottom an honourable man, because man seldom acts upon natural impulse, but from some secret passion of the moment which lies hidden and concealed within the narrowest folds of his heart.

Can it be, that Providence has not connected the permanent felicity of a Nation with its virtue? The experiment, at least, is recommended by every sentiment which ennobles human Nature. Alas! is it rendered impossible by its vices?

Few men are capable of making a continual sacrifice of all views of private interest, or advantage, to the common good. It is vain to exclaim against the depravity of human nature on this account; the fact is so, the experience of every age and nation has proved it and we must in a great measure, change the constitution of man, before we can make it otherwise. No institution, not built on the presumptive truth of these maxims can succeed.

A small knowledge of human nature will convince us, that, with far the greatest part of mankind, interest is the governing principle; and that almost every man is more or less, under its influence. Motives of public virtue may for a time, or in particular instances, actuate men to the observance of a conduct purely disinterested; but they are not of themselves sufficient to produce persevering conformity to the refined dictates and obligations of social duty.