I hold that the propositions embodied in natural science are not derived by any definite rule from the data of experience, and that they can neither be verified nor falsified by experience according to any definite rule.

Every known fact in natural science was divined by the presentiment of somebody, before it was actually verified.

These maxims and the art of interpreting them may be said to constitute the premisses of science but I prefer to call them our scientific beliefs. These premisses or beliefs are embodied in a tradition, the tradition of science.

If scientists seriously think natural selection applies to humans, they haven't been in high school in a long time.

But man has still another powerful resource: natural science with its strictly objective methods.

Natural science, does not simply describe and explain nature; it is part of the interplay between nature and ourselves.