Regarding the letter on climate change, three quotes from Karl Popper on science:
1. "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."
2 "No rational argument will have a rational effect on a man who does not want to adopt a rational attitude."
3. "Science may be described as the art of systematic over-simplification."
J. Kaye Faulkner