Separate we come and separate we go, And this, be it known, is all that we know.

What we know is everything, it is our limit, of what we can be.

Ultimately, all things are known because you want to believe you know.

The terms which, in his inmost heart, each man knows. As I know mine. As all know. For that is the truth of it — that we all know, God, that we know, that we know, we know, we know.

We know this apodictic rock beneath our feet. That dogmatic sun above our heads. The world of dreams, the agony of love and the foreknowledge of death. That is all we know.

Science holds our answer; knowledge—real knowledge, verifiable knowledge, not superstition, not religious nonsense—will be our salvation.

To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge.

We already know enough to lead perfect lives.

What do we know? What do we really know? He licks his dried cracked lips. We know this apodictic rock beneath our feet. That dogmatic sun above our heads. The world of dreams, the agony of love and the foreknowledge of death. That is all we know. And all we need to know? Challenge that statement. I challenge that statement. With what? I don't know.

That we are surrounded by deep mysteries is known to all but the incurably ignorant.

We want to know in order to make ourselves free. That is our life: one universal cry for freedom.

Eventually all things are known. And few matter.

We now know most things that can be measured in this world, except the bounds of human ambition!

Finally I came to think that may be everything we need to know,ever,about anything,is already within us,waiting till we call for it.