[A living organism] ... feeds upon negative entropy ... Thus the device by which an organism maintains itself stationary at a fairly high level of orderliness (= fairly low level of entropy) really consists in continually sucking orderliness from its environment.

The task is not to see what has never been seen before, but to think what has never been thought before about what you see everyday.

I belong to those theoreticians who know by direct observation what it means to make a measurement. Methinks it were better if there were more of them.

Multiplicity is only apparent, in truth, there is only one mind.

The unphilosophical and philosophical attitudes can be very sharply distinguished (with scarcely any intermediate forms) by the fact that the first accepts everything that happens as regards its general form, and finds occasion for surprise only in that special content by which something that happens here today differs from what happened there yesterday; whereas for the second, it is precisely the common features of all experience, such as characterise everything we encounter, which are the primary and most profound occasion for astonishment.

Matter and energy seem granular in structure, and so does “life”, but not so mind.

The sensation of colour cannot be accounted for by the physicist's objective picture of light-waves.