A scholar's business is to add to what is known. That is all. But it is capable of giving the very greatest satisfaction, because knowledge is good. It does not have to look good or even sound good or even do good. It is good just by being knowledge. And the only thing that makes it knowledge is that it is true. You can't have too much of it and there is no little too little to be worth having. There is truth and falsehood in a comma.

Knowledge is happiness, because to have knowledge — broad, deep knowledge — is to know true ends from false, and lofty things from low.

"Knowledge is power." Rather, knowledge is happiness, because to have knowledge - broad, deep knowledge - is to know true ends from false, and lofty things from low. To know the thoughts and deeds that have marked man's progress is to feel the great heart-throbs of humanity through the centuries; and if one does not feel in these pulsations a heavenward striving, one must indeed be deaf to the harmonies of life.

The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.

It's where we're nearest to our humanness. Useless knowledge for its own sake. Useful knowledge is good, too, but it's for the faint-hearted, an elaboration of the real thing, which is only to shine some light, it doesn't matter where on what, it's the light itself, against the darkness, it's what's left of God's purpose when you take away God.

Knowledge is, indeed, that which, next to virtue, truly and essentially raises one man above another.

Knowledge is merely brilliance in organization of ideas and not wisdom. The truly wise person goes beyond knowledge.

Real wisdom is not the knowledge of everything, but the knowledge of which things in life are necessary, which are less necessary, and which are completely unnecessary to know. Among the most necessary knowledge is the knowledge of how to live well, that is, how to produce the least possible evil and the greatest goodness in one’s life. At present, people study useless sciences, but forget to study this, the most important knowledge.

Suppose that we are wise enough to learn and know — and yet not wise enough to control our learning and knowledge, so that we use it to destroy ourselves? Even if that is so, knowledge remains better than ignorance. It is better to know — even if the knowledge endures only for the moment that comes before destruction — than to gain eternal life at the price of a dull and swinish lack of comprehension of a universe that swirls unseen before us in all its wonder. That was the choice of Achilles, and it is mine, too.

Knowledge is power. Power to do evil...or power to do good. Power itself is not evil. So knowledge itself is not evil.

Knowledge is proud that he has learned so much. Wisdom is humble that he knows not more.

All learning is useful, all the sciences are curious, all the arts are beautiful; but the most useful, most curious and most beautiful is perfect knowledge and perfect government of oneself.

To furnish the means of acquiring knowledge is ... the greatest benefit that can be conferred upon mankind. It prolongs life itself and enlarges the sphere of existence.

Knowledge is power. The real test of knowledge is not whether it is true but whether it empowers us. Scientists usually assume that no theory is 100% correct. Truth, consequently, is a poor test for knowledge. The real test is utility. A theory that enables us to do new things constitutes knowledge.