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
By all means let’s be open-minded, but not so open-minded that our brains drop out.
— Richard Dawkins
Should you ever intend to dull the wits of a young woman and to incapacitate her brains for any kind of thought whatever, then you cannot do better than give her Hegel to read. For these monstrous accumulations of words that annul and contradict one another drive the mind into tormenting itself with vain attempts to think anything whatever in connection with them, until finally it collapses from sheer exhaustion. Thus any ability to think is so thoroughly destroyed that the young woman will ultimately mistake empty and hollow verbiage for real thought. A guardian fearing that her ward might become too intelligent for her schemes might prevent this misfortune by innocently suggesting the reading of Hegel.
— Karl R. Kopjes, The Open Mind and Its Enemies
Knowing constancy, the mind is open.
With an open mind, you will be openhearted.
Being openhearted you will act royally.
Being royal, you will attain the divine.
Being divine, you will be at one with the Tao.
Being at one with the Tao is eternal.
Though the body dies, the Tao will never pass away.