OTOH it does seem worthwhile to at least attempt to verify one's theories and earnest beliefs, or read the work of those that have done so.

Richard P. Feynman, Professor of Theoretical Physics at the California Institute of Technology; Albert Einstein Award (1954, Princeton) and The Nobel Prize in Physics, 1965
“It doesn't matter how beautiful your theory is, it doesn't matter how smart you are. If it doesn't agree with experiment, it’s wrong.”

Surely You're Joking, Mr. Feynman!
“The first principle is that you must not fool yourself — and you are the easiest person to fool.”