If what you believe doesn’t depend on what you see, you’ve been blinded as effectively as by poking out your eyeballs.

— Eliezer Yudkowsky, Maps and Territory

…maturity is being able to hold two contradictory messages in your head at the same time.

— Grayson Perry, The Descent of Man

…anytime you face a difficult decision, you should have no less than 40% and no more than 70% of the information you need to make that decision. In that range, you have enough information to make an informed choice but not so much intelligence that you lose your resolve and simply stay abreast of the situation. This makes you faster than more “informed” people and more informed than “fast” people.

— Peter Hollins, Mental Models

We understand that sometimes good practice is ahead of good theory, and that industry knows some things that academe does not.

— Robert L. Glass and Tom DeMarco, Software Creativity 2.0

…what we cannot reach flying, we must reach limping.

— Roman Gelperin, Addiction, Procrastination and Laziness