It is my opinion that the isolated mind loses its purchase on reality all too easily and becomes prone to fantasy.

Just because it's imaginary, doesn't mean it's not real.

for he had acquired, as time went on, the firm conviction that any thought, even the most audacious, that any fiction, even the most insane, can one day materialize and see its fulfillment in space and time.

What is real and what is not — is I don't know and I cannot.

Reality is the #1 cause of insanity among those who are in contact with it

Insanity is the ability to communicate your ideas. It’s as if you were in a foreign country, able to see and understand everything that’s going on around you but incapable of explaining what you need to know or of being helped, because you don’t understand the language they speak there.