Given any rule, however �fundamental� or �necessary� for science, there are always circumstances when it is advisable not only to ignore the rule, but to adopt its opposite.

No single theory ever agrees with all the facts in its domain

There is not a single rule, however plausible, and however firmly grounded in epistemology, that is not violated at some time or other. It becomes evident that such violations are not accidental events, they are not results of insufficient knowledge or of inattention which might have been avoided. On the contrary, we see that they are necessary for progress.

One knows quite well that harmony can be a harmony of appearances.

Traditions are neither good nor bad, they simply are... Rationality is not an arbiter of traditions, it is itself a tradition or an aspect of a tradition.

Early Chinese thinkers had taken variety at face value. They had favored diversification and collected anomalies instead of trying to explain them away.

Copernicanism and other essential ingredients of modern science survived only because reason was frequently overruled in their past.