It is often said that the progression from simple to complex runs counter to the normal statistics of chance that are formalized in the Second Law of Thermodynamics. Strictly speaking, we could avoid this criticism simply by insisting that the Second Law does not apply to living systems in the environment in which we find them. For the Second Law applies only when there is no overall flow of energy into or out of a system, whereas all living systems are sustained by a net inflow of energy.

Many theories of the ancient world seem terribly childish today, a hodge-podge of fables and false comparisons.But our theories will seem childish five-hundred years from now.Every theory is based on some analogy, and sooner or later the theory fails because the analogy turns out to be false. A theory in its day helps to solve the problems of the day.

Science, like art, is not a copy of nature but a re-creation of her.

Certainty ends inquiry.

Has there ever been a society which has died of dissent? Several have died of conformity in our lifetime.

All science is the search for unity in hidden likenesses.

Ask an impertinent question and you are on the way to the pertinent answer.