Answer; One scientific belief held by both Rene Descartes and Isaac Newton is that the reasoned thought is the way to discover truth.
Explanation; Rene Descartes used deductive reasoning, deducing a conclusion from a set of premises, to determine the nature of the universe, that was contrary to other great thinkers of the time who used scientific observation. Sir Isaac Newton; specialized in uniting experimental and theoretical elements of modern science.
One scientific belief held by both René Descartes and Isaac Newton is that "<span>(1) reasoned thought is the way to discover truth," since both of these men were progressive thinkers who challenged the religious status quo. </span>
