"Newton was not the first of the age of reason. He was the last of the magicians...the last great mind which looked out on the visible and intellectual world with the same eyes as those who began to build our intellectual inheritance rather less than 10,000 years ago." - Keynes

It's from Keynes' remarkable lecture, "Newton, the Man": https://mathshistory.st-andrews.ac.uk/Extras/Keynes_Newton/

The greatest discoveries are, when viewed from the lens of the prior world, irrational, because they change the nature of rationality itself. That's part of what makes them great

This is true of Newton, & in much smaller measure of Darwin, Einstein, quantum mechanics, & Turing