Quotes by : Karl R. Popper

Whenever a theory appears to you as the only possible one, take this as a sign that you have neither....

We can all participate in the heritage of man. We all can help to preserve it. And we can all make our....

Democracy provides the institutional framework for the reform of political institutions (other than this....

What we need and what we want is to moralize politics, not to politicize morals.

It is complete nihilism to propose laying down arms in a world where atom bombs are around. It is very....

I remained a socialist for several years, even after my rejection of Marxism; and if there could be such....

Aestheticism and radicalism must lead us to jettison reason, and to replace it by a desperate hope for....

Always remember that it is impossible to speak in such a way that you cannot be misunderstood: there....

Denying realism amounts to megalomania.

It is often asserted that, in view of the situation in quantum theory, object and subject can no longer....