Paul Bloom

Imagination is Reality Lite - a useful substitute when the real pleasure is inaccessible, too risky, or too much work.

We are constituted so that simple acts of kindness, such as giving to charity or expressing gratitude, have a positive effect on our long-term moods. The key to the happy life, it seems, is the good life: a life with sustained relationships, challenging work, and connections to community.

You'd expect, as good Darwinian creatures, we would evolve to be fascinated with how the world really is, and we would use language to convey real-world information, we'd be obsessed with knowing the way things are, and we would entirely reject stories that aren't true. They're useless. But that's not the way we work.

Humans are social beings, and we are happier, and better, when connected to others.

The enjoyment we get from something is powerfully influenced by what we think that thing really is. This is true for intellectual pleasures, such as the appreciation of paintings and stories, and it is true as well for pleasures that seem simpler and more animalistic, such as the satisfaction of hunger and lust.

Most of us know nothing about constitutional law, so it's hardly surprising that we take sides in the Obamacare debate the way we root for the Red Sox or the Yankees. Loyalty to the team is what matters.

Families survive the Terrible Twos because toddlers aren't strong enough to kill with their hands and aren't capable of using lethal weapons. A 2-year-old with the physical capacities of an adult would be terrifying.

The real problem with natural selection is that it makes no intuitive sense. It is like quantum physics; we may intellectually grasp it, but it will never feel right to us.

Relying on the face might be human nature - even babies prefer to look at attractive people. But, of course, judging someone based on the geometry of his features is, from a moral and legal standpoint, no better than judging him based on the color of his skin.

One way to make a baby cry is to expose it to cries of other babies. There's sort of contagiousness to the crying. It's not just crying. We also know that if a baby sees another human in silent pain, it will distress the baby. It seems part of our very nature is to suffer at the suffering of others.

In politics and in society, we can use our reason to rise above our parochial natures. Too bad that our elected officials don't choose to do so more often.

Some of the natural world is appealing, some of it is terrifying, and some of it grosses us out. Modern people don't want to be dropped naked into a swamp. We want to tour Yosemite with our water bottles and G.P.S. devices. The natural world is a source of happiness and fulfillment, but only when prescribed in the right doses.