“Keep an open mind, but no so open that your brains fall out”

“It pays to keep an open mind, but not so open your brains fall out.”

“Keeping an open mind is a virtue—but, as the space engineer James Oberg once said, not so open that your brains fall out.”

“There is a distinct difference between having an open mind and having a hole in your head from which your brain leaks out.”

“Do not be so open-minded that your brains fall out.”

“If you're too open-minded; your brains will fall out.”

“We want to be open-minded enough to accept radical new ideas when they occasionally come along, but we don't want to be so open-minded that our brains fall out.”