Reason is the Devil’s greatest whore; by nature and manner of being she is a noxious whore; she is a prostitute, the Devil’s appointed whore; whore eaten by scab and leprosy who ought to be trodden under foot and destroyed, she and her wisdom … Throw dung in her face to make her ugly. She is and she ought to be drowned in baptism… She would deserve, the wretch, to be banished to the filthiest place in the house, to the closets.

~ Martin Luther, Erlangen Edition v. 16, pp. 142-148

There is on earth among all dangers no more dangerous thing than a richly endowed and adroit reason… Reason must be deluded, blinded, and destroyed.

~ Martin Luther, quoted by Walter Kaufmann,

The Faith of a Heretic, (Garden City, NY, Doubleday, 1963), p. 75

People gave ear to an upstart astrologer [Copernicus] who strove to show that the earth revolves, not the heavens or the firmament, the sun and the moon. Whoever wishes to appear clever must devise some new system, which of all systems is of course the very best. This fool wishes to reverse the entire science of astronomy; but sacred scripture tells us [Joshua 10:13] that Joshua commanded the sun to stand still, and not the earth.

~ Martin Luther, “Works,” Volume 22, c. 1543

We know, on the authority of Moses, that longer than six thousand years the world did not exist.

~ Martin Luther, “Lectures on Genesis”

These and further citations here.