All I know is that I do not know anything

One thing only I know, and that is that I know nothing'.

I know nothing.

One thing only I know, and that is that I know nothing.

I know one thing: That I know nothing,

I only know one thing, and that is I know nothing

I know nothing except the fact of my ignorance.

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

Sólo sé que no sé nada.

The Only Thing I Know For Sure Is That I Know Nothing At All, For Sure

I know that I am intelligent, because I know that I know nothing.

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

"Scio me nihil scire" - I know that I know nothing

True knowledge exists in knowing that you know nothing.