That is the logical tight-rope on which we have to walk if we wish to interpret nature.

The exception tests the rule.

Physics is not the most important thing. Love is.

If you thought that science was certain - well, that is just an error on your part.

From a long view of the history of mankind, seen from, say, ten thousand years from now, there can be little doubt that the most significant event of the 19th century will be judged as Maxwell's discovery of the laws of electrodynamics. The American Civil War will pale into provincial insignificance in comparison with this important scientific event of the same decade.

The same equations have the same solutions

Teach principles not formulas.