All religion may be centered around a generally good idea, however, this has not stopped its adherents from acting like bastards.

No theory ever agrees with all the facts in its domain, yet it is not always the theory that is to blame. Facts are constituted by older ideologies, and a clash between facts and theories may be proof of progress. It is also a first step in our attempt to find the principles implicit in familiar observational notions.

The validity of usefulness, adequacy of popular standards can be tested only by research that violates them.

The separation of state and church must be complemented by the separation of state and science, that most recent, most aggressive, and most dogmatic religious institution.

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

A Universal Good should reflect the reality of the individual benefits that are collected under its name, not the other way around.

Events and developments, such as ... the Copernican Revolution, ... occurred only because some thinkers either decided not to be bound by certain "obvious" methodological rules, or because they unwittingly broke them.