In the 30's and 40's they did both.
Science can only be created by those who are thoroughly imbued with the aspiration toward truth and understanding. This source of feeling, however, springs from the sphere of religion. To this there also belongs the faith in the possibility that the regulations valid for the world of existence are rational, that is, comprehensible to reason. I cannot conceive of a genuine scientist without that profound faith. The situation may be expressed by an image: science without religion is lame, religion without science is blind.
Albert Einstein, Ideas and Opinions, New York, 1954 p. 46.
"This source of feeling, however, springs from the sphere of religion"
The talk of "feelings" in science. That is what ID is all about. Does it matter if Einstein said it? Nope.