There is one mind common to all individual men. Every man is an inlet to the same and to all of the same. He that is once admitted to the right of reason is made a freeman of the whole estate. What Plato has thought, he may think; what a saint has felt, he may feel; what at any time has befallen any man, he can understand. Who hath access to this universal mind is a party to all that is or can be done, for this is the only and sovereign agent.
Knowledge is the life of the mind.
Let your mind alone, and see what happens.
All paid jobs absorb and degrade the mind.
Did you ever think about all of the nights you lived through and can’t remember? The ones that were so mundane your brain just didn’t bother to record them. Hundreds, maybe thousands of nights come and go without being preserved by our memory. Does that ever freak you out? Like maybe your mind recorded all of the wrong nights?
—Matthew Quick in Forgive Me, Leonard Peacock
To strengthen the mind you must harden the muscles.