Quote of the Day - Max Radin

"[Practical gentlemen] have a number of bitterly sarcastical comments on persons whose minds are so open that their brains fall out." ~ Max Radin

That quote seems to be the genesis for various variants which have come out since, most significantly to my mind in chronological order being Arthur Hays Sulzberger's "I believe in an open mind, but not so open that your brains fall out" and subsequently Carl Sagan's "It pays to keep an open mind, but not so open your brains fall out.”