Admittedly, the body of scientists, as a whole, does uphold the authority of science over the lay public. It controls thereby also the process by which young men are trained to become members of the scientific profession.

But even physics cannot be defined from an atomic topography.

I shall suggest, on the contrary, that all communication relies, to a noticeable extent on evoking knowledge that we cannot tell, and that all our knowledge of mental processes, like feelings or conscious intellectual activities, is based on a knowledge which we cannot tell.

Discoveries are made by pursuing possibilities suggested by existing knowledge.

Human beings exercise responsibilities within a social setting and a framework of obligations which transcend the principle of intelligence.

Theories of evolution must provide for the creative acts which brought such theories into existence.

A free society is regarded as one that does not engage, on principle, in attempting to control what people find meaningful, and a totalitarian society is regarded as one that does, on principle, attempt such control.