The truth I do not dare to know I muffle with a jest.
To know, is to know that you know nothing, that is the meaning of true knowledge.
Parting is all we know of heaven, and all we need of hell.
Dogs are better than human beings because they know but do not tell.
Without knowing the force of words, it is impossible to know more.
True wisdom is knowing what you don't know.
Men must know their limitations.
Actors know what actors are insecure about - and they're all insecure.
Knowing is not enough, we must apply. Willing is not enough, we must do.
I know what I don't know.
He doesn’t even know I exist.
Those that know, do. Those that understand, teach.
The more you know, the more you know you don't know.
We only know of one duty, and that is to love.