Wisdom is knowledge which has become a part of one’s being.

As the traveler who has once been from home is wiser than he who has never left his own doorstep, so a knowledge of one other culture should sharpen our ability to scrutinize more steadily, to appreciate more lovingly, our own.

Nothing leads so straight to futility as literary ambitions without systematic knowledge.

There is much pleasure to be gained from useless knowledge.

They [the Americans] have all a lively faith in the perfectibility of man, they judge that the diffusion of knowledge must necessarily be advantageous, and the consequences of ignorance fatal; they all consider society as a body in a state of improvement, humanity as a changing scene, in which nothing is, or ought to be, permanent; and they admit that what appears to them today to be good, may be superseded by something better tomorrow.

When you know a thing, to hold that you know it; and when you do not know a thing. To allow that you do not know it—this is knowledge.

First, have a definite, clear practical ideal; a goal, an objective. Second, have the necessary means to achieve your ends; wisdom, money, materials, and methods. Third, adjust all your means to that end.

Those who would administer wisely must, indeed, be wise, for one of the serious obstacles in the improvement of our race is indiscriminate charity.