Rationalism is the enemy of art, though necessary as a basis for architecture.
Liberalism is Rationalism in politics.
As the power of Christianity declined through the centuries that have followed the Reformation, Calvinism played a less and less important part, while the new philosophies of mechanism and rationalism correspondingly increased.
Christianity is not rationalism, but faith in God's revelation. A conspicuous, all-important item in that revelation is the resurrection of the body.
Far from being demeaning to human spiritual values, scientific rationalism is the crowning glory of the human spirit.
The very essence of rationalism is that it assumes that the reason is the highest faculty in man and the lord of all the rest.
Surrealism was necessary - essential, even - in the 1920s to bridge the gap between rationalism and the subconscious. It started something important. But by the early '60s, it had become petit-bourgeois; it was too intellectual and romantic, and had ground to a halt. It had become respectable.
Rationalism, which is the feeling that everything is subject to and completely explicable by Reason, consequently rejects everything not visible and calculable.
It is impossible to communicate to people who have not experienced it the undefinable menace of total rationalism.