What I do not know, I do not think I know.

I know a little bit about a great many things and not enough about any one to make a living in these times.

I know too much and not enough

The unknown words remind me that there's a lot I don't know in this world.

We know hardly anything about anything.

The only thing I know is that I know nothing, and i am no quite sure that i know that.

How it is we have so much information, but know so little?

We don't know much about our current selves, do we?

I believe that we do not know anything for certain, but everything probably.

But what I mean is, lots of time you don’t know what interests you most till you start talking about something that doesn’t interest you most. I mean you can’t help it sometimes.

The more I know, the more I realize I know nothing.

The only reason people do not know much is because they do not care to know. They are incurious. Incuriousity is the oddest and most foolish failing there is.

The more I learn, the more I realize how much I don't know.

We can't define anything precisely. If we attempt to, we get into the paralysis of thought that comes to philosophers... one saying to the other: you don't know what you are talking about! The second one says: what do you mean by talking? What do you mean by you? What do you mean by know?