organisms. Vibration is the recurrence of contrast within identity of type. The whole possibility of measurement in the physical world depends on this principle. To measure is to count vibrations.
Thus physical quantities are aggregates of physical vibrations, and physical vibrations are the expression among the abstractions of physical science of the fundamental principle of æsthetic experience.
Another example of this same principle is to be found in the connection between body and mind. Both mind and body refer to their life-history of separate concrete occasions. So the connection which we seek is to be found in the creative process relating a physical occasion, in the life of the body, to its corresponding mental occasion in the life of the mind.
The physical occasion enters into the mental occasion, as already actual, and as contributing to its ground. The reversion from its ground, which the consequent of ideal novelty
