Those who promise us paradise on earth never produced anything but a hell.

Quote by Karl Popper

Topics: Karl Popper Quotes

We must plan for freedom, and not only for security, if for no other reason...

We must plan for freedom, and not only for security, if for no other reason...

No rational argument will have a rational effect on a man who does not want...

No rational argument will have a rational effect on a man who does not want...

We all remember how many religious wars were fought for a religion of love and...

We all remember how many religious wars were fought for a religion of love and...

Whenever a theory appears to you as the only possible one, take this as a...

Whenever a theory appears to you as the only possible one, take this as a...

Science may be described as the art of systematic over-simplification.

Science may be described as the art of systematic over-simplification.

Science must begin with myths, and with the criticism of myths.

Science must begin with myths, and with the criticism of myths.

It is impossible to speak in such a way that you cannot be misunderstood.

It is impossible to speak in such a way that you cannot be misunderstood.

In so far as a scientific statement speaks about reality, it must be falsifiable; and...

In so far as a scientific statement speaks about reality, it must be falsifiable; and...

We all remember how many religious wars were fought for a religion of love and...

We all remember how many religious wars were fought for a religion of love and...

Piecemeal social engineering resembles physical engineering in regarding the ends as beyond the province of...

Piecemeal social engineering resembles physical engineering in regarding the ends as beyond the province of...

Our knowledge can only be finite, while our ignorance must necessarily be infinite.

Our knowledge can only be finite, while our ignorance must necessarily be infinite.

It is impossible to speak in such a way that you cannot be misunderstood.

It is impossible to speak in such a way that you cannot be misunderstood.

There is no history of mankind, there are only many histories of all kinds of...

There is no history of mankind, there are only many histories of all kinds of...

Good tests kill flawed theories; we remain alive to guess again.

Good tests kill flawed theories; we remain alive to guess again.

We have become makers of our fate when we have ceased to pose as its...

We have become makers of our fate when we have ceased to pose as its...

Whenever a theory appears to you as the only possible one, take this as a...

Whenever a theory appears to you as the only possible one, take this as a...

First, you know, a new theory is attacked as absurd; then it is admitted to...

First, you know, a new theory is attacked as absurd; then it is admitted to...

The theory seems to be that as long as a man is a failure he...

The theory seems to be that as long as a man is a failure he...

The popularity of conspiracy theories is explained by people's desire to believe that there is...

The popularity of conspiracy theories is explained by people's desire to believe that there is...

If the facts don't fit the theory, change the facts.

If the facts don't fit the theory, change the facts.