The same thinking that has led you to where you are is not going to lead you to where you want to go.

The greatest knowledge a person can possess is the address of the local library.

A theory is something nobody believes, except the person who made it. An experiment is something everybody believes, except the person who made it.

I know that philosophically a murderer is not responsible for his crime, but I prefer not to take tea with him.

Private capitalists inevitably control, directly or indirectly, the main sources of information. It is thus extremely difficult, and indeed in most cases quite impossible, for the individual citizen to come to objective conclusions and to make intelligent use of his political rights.

... the desire for truth must take precedence over all other desires.

The words of language, as they are written or spoken, do not seem to play any role in my mechanism of thought. The physical entities which seem to serve as elements in thought are certain signs and more or less clear images.