Knowledge was meant to be shared.

All our knowledge has its origins in our perceptions.

I sometimes confuse myself with the little I know.

Since we cannot know all that is to be known of everything, we ought to know a little about everything.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

The struggling for knowledge hath a pleasure in it like that of wrestling with a fine woman.

The end of all knowledge should be in virtuous action.

All of us were stuck to the surface of a ball incidentally. The planet was ball-shaped. Nobody knew why we didn't fall off, even though everybody pretended to kind of understand it.

... most of the world's ills can be traced to the fact that Man's knowledge of himself has not kept pace with his knowledge of the physical world.

And I remember most of what I know that is good and true and lasting has come not from scholars but from minstrels and gypsies ...