It is the most wondrous thing we have discovered in the universe, and it is us.

If you ever feel lazy or dull, take heart: you're the busiest, brightest thing on the planet.

It is the most wondrous thing we have discovered in the universe, and it is us.

The more familiar the world becomes, the less information your brain writes down, and the more quickly time seems to pass.

When a male vole repeatedly mates with a female, a hormone called vasopressin is released in his brain. The vasopressin binds to receptors in a part of the brain called the nucleus accumbens, and the binding mediates a pleasurable feeling that becomes associated with that female. This locks in the monogamy, which is known as pair-bonding. If you block this hormone, the pair-bonding goes away.

What we find is that our brains have colossal things happening in them all the time.

You are part of a complex social network that changes your biology with every interaction, and which your actions can change.