Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems.

The great extension of our experience in recent years has brought light to the insufficiency of our simple mechanical conceptions and, as a consequence, has sh…

What is it that we humans depend on? We depend on our words... Our task is to communicate experience and ideas to others. We must strive continually to extend …

We must be clear that when it comes to atoms, language can be used only as in poetry. The poet, too, is not nearly so concerned with describing facts as with c…

Principles You can't say A is made of B or vice versa. All mass is interaction.

There is no quantum world. There is only an abstract physical description. It is wrong to think that the task of physics is to find out how nature is. Physics …

The external world of physics has thus become a world of shadows. In removing our illusions we have removed the substance, for indeed we have seen that substan…