Karl Popper Quotes

The remarkable position in which we find ourselves is that we don't actually know what we actually know.

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.

Only a blind man can easily define what light is. When you do not know, you are bold. Ignorance is always bold; knowledge hesitates. And the more you know, the more you feel that the ground underneath is dissolving. The more you know, the more you feel how ignorant you are.

I'm not aware of too many things, I know what I know, if you know what I mean.

It is not possible to know what you need to learn.

When you start talking about the known knowns and the unknown unknowns, you're thrown into a crazy meta-level discussion. Do I know what I know, do I know what I don't know, do I know what I don't know I don't know. It becomes a strange, Lewis Carroll - like nursery rhyme.

It was strange how you could never form any conclusion from what women said. It was not that they did not know what they were talking about, but you never drew the right conclusions.

Even those of us who are very very aware are still so unaware. Everything's relative so that, the more you know, the more you know you don't know anything.

Indeed, the most important product of knowledge is ignorance.

To know, is to know that you know nothing. That is the meaning of true knowledge.

To know anything well involves a profound sensation of ignorance.

In order to have wisdom we must have ignorance.

We can be absolutely certain only about things we do not understand.

For my part, it was Greek to me.

There are many things that I don't understand.

There are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns – the ones we don’t know we don’t know.

Any order that can be misunderstood, will be misunderstood

A lot of things get misinterpreted with me, I guess.

I love telling stories, but I also am more aware now of how complex reality is and how difficult it is to really explain what happened or how I felt. Maybe that sometimes makes me a little bit vague, because I don't want to really put my finger on anything or set it in stone.

It's a murky world out there, and it's hard to figure things out sometimes.

Confusion is not an ignoble condition

We write about what we don't know about what we know.

That sometimes clear ... and sometimes vague stuff ... which is ... mathematics.

Oh, I don't know, you know, don't you know?