Science may be described as the art of systematic oversimplification.
The point is that, whenever we propose a solution to a problem, we ought to try as hard as we can to overthrow our solution, rather than defend it. Few of us, unfortunately, practice this precept; but other people, fortunately, will supply the criticism for us if we fail to supply it ourselves.
No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
True ignorance is not the absence of knowledge, but the refusal to acquire it.
Whenever a theory appears to you as the only possible one, take this as a sign that you have neither understood the theory nor the problem which it was intended to solve.
If you know that things are bound to happen whatever you do, then you may feel free to give up the fight against them.
Evolution is not a fact. Evolution doesn’t even qualify as a theory or as a hypothesis. It is a metaphysical research program, and it is not really testable science.