He had a suspicion of plausible answers; they were so often wrong.

Facts and values are entangled in science. It’s not because scientists are biased, not because they are partial or influenced by other kinds of interests, but because of a commitment to reason, consistency, coherence, plausibility...

It may have happened, it may not have happened but it could have happened.

Paradoxes are less paradoxical in their reference to truth than most of the most plausible axioms.