The missing crowds make you lonely. You begin to complain about all the people you could be meeting. But no one listens or sympathizes with you, because this is precisely what you chose when you were alive.

It turns out that dopamine is a chemical on double duty in the brain. Along with its role in motor commands, it also serves as the main messenger in the reward systems, guiding a person toward food, drink, mates, and all things useful for survival. Because of its role in the reward system, imbalances in dopamine can trigger gambling, overeating, and drug addiction - behaviors that result from a reward system gone awry.

It is only through us that God lives. When we abandon him, he dies.

Brains are like representative democracies. They are built of multiple, overlapping experts who weigh in and compete over different choices.

You´re not perceiving what's out there. You're perceiving whatever your brain tells you.

Once you begin deliberating about where your fingers are jumping on the piano keyboard, you can no longer pull off the piece.

Among all the creatures of creation, the gods favor us: We are the only ones who can empathize with their problems.