I do not see why I should be polite to tyrants, who slobber of humanitarianism and think only of their own petty interests.

The best education consists in immunizing people against systematic attempts at education.

Mathematical Reasoning is not only exact; it has its own criteria of reality.

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

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.

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

Science is not sacrosanct. The mere fact that it exists, is admired, has results is not sufficient for making it a measure of excellence. Modern science arose from global objections against earlier views and rationalism itself, the idea that there are general rules and standards for conducting our affairs, affairs of knowledge included, arose from global objections to common sense.