"The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it."
— Terry Pratchett (Diggers)

"A mind is like a parachute. It doesn't work if it is not open."
— Frank Zappa

"All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake up in the day to find it was vanity, but the dreamers of the day are dangerous men, for they may act their dreams with open eyes, to make it possible."
— T. E. Lawrence (Seven Pillars of Wisdom: A Triumph)

"Every human being on the face of the earth has a steel plate in his head, but if you lie down now and then and get still as you can, it will slide open like elevator doors, letting in all the secret thoughts that have been standing around so patiently, pushing the button for a ride to the top. The real troubles in life happen when those hidden doors stay closed for too long."
— Sue Monk Kidd (The Secret Life of Bees)

""The trouble with having an open mind, of course, is that people will insist on coming along and trying to put things in it." "
— Terry Pratchett Diggers