Quotes About Evolution

The emotion of disgust evolved initially to optimize responses to the omnivore's dilemma. Individuals who had a properly calibrated sense of disgust were able to consume more calories than their overly disgustable cousins while consuming fewer dangerous microbes than their insufficiently disgustable cousins.

It would be nice to believe that we humans were designed to love everyone unconditionally. Nice, but rather unlikely from an evolutionary perspective. Parochial love—love within groups—amplified by similarity, a sense of shared fate, and the suppression of free riders, may be the most we can accomplish.

Each generation tends to see the one after it as weak, whiny, and lacking in resilience.

Evolution is a design process; it's just not an intelligent design process.

Groups that were able to put their by-product gods to some good use had an advantage over groups that failed to do so, and so their ideas (not their genes) spread.

But if you think about moral reasoning as a skill we humans evolved to further our social agendas—to justify our own actions and to defend the teams we belong to—then things will make a lot more sense. Keep your eye on the intuitions, and don't take people's moral arguments at face value. They're mostly post hoc constructions made up on the fly, crafted to advance one or more strategic objectives.

Passionate love does not turn into companionate love. Passionate love and companionate love are two separate processes, and they have different time courses.

Animals that live in large peaceful societies seem to violate the laws of evolution (such as competition and survival of the fittest), but only until you learn a bit more about evolution.

Human nature is a complex mix of preparations for extreme selfishness and extreme altruism. Which side of our nature we express depends on culture and context. When opponents of evolution object that human beings are not mere apes, they are correct. We are also part bee.

It's a great example of how "innate" refers to the first draft of the mind. The final edition can look quite different, so it's a mistake to look at today's hunter-gatherers and say, "See, that's what human nature really looks like!

By the standards of our great-grandparents, nearly all of us are coddled. Each generation tends to see the one after it as weak, whiny, and lacking in resilience. Those older generations may have a point, even though these generational changes reflect real and positive progress.

Gods and religions, in sum, are group-level adaptations for producing cohesiveness and trust. Like maypoles and beehives, they are created by the members of the group, and they then organize the activity of the group. Group-level adaptations, as Williams noted, imply a selection process operating at the group level.

the third principle: Morality binds and blinds. The central metaphor of these four chapters is that human beings are 90 percent chimp and 10 percent bee. Human nature was produced by natural selection working at two levels simultaneously.

We humans have a dual nature—we are selfish primates who long to be a part of something larger and nobler than ourselves. We are 90 percent chimp and 10 percent bee.93 If you take that claim metaphorically, then the groupish and hivish things that people do will make a lot more sense. It's almost as though there's a switch in our heads that activates our hivish potential when conditions are just right.

We humans have a dual nature—we are selfish primates who long to be a part of something larger and nobler than ourselves. We are 90 percent chimp and 10 percent bee. If you take that claim metaphorically, then the groupish and hivish things that people do will make a lot more sense. It's almost as though there's a switch in our heads that activates our hivish potential when conditions are just right.

It is inconceivable that you would ever see two chimpanzees carrying a log together."52 I was stunned. Chimps are arguably the second-smartest species on the planet, able to make tools, learn sign language, predict the intentions of other chimps, and deceive each other to get what they want. As individuals, they're brilliant. So why can't they work together? What are they missing?

Cultural change works orders of magnitude faster then genetic change. Stephen Jay Gould

human beings are 90 percent chimp and 10 percent bee. Human nature was produced by natural selection working at two levels simultaneously. Individuals compete with individuals within every group, and we are the descendants of primates who excelled at that competition. This gives us the ugly side of our nature, the one that is usually featured in books about our evolutionary

Vengeful and grateful feelings appear to have evolved precisely because they are such useful tools for helping individuals create cooperative relationships, thereby reaping the gains from non-zero-zum games.

Moral systems are interlocking sets of values, virtues, norms, practices, identities, institutions, technologies, and evolved psychological mechanisms that work together to suppress or regulate self-interest and make cooperative societies possible.66

One use of language is that it partially freed humans from "stimulus control.

although the controlled system does not conform to behaviorist principles, it also has relatively little power to cause behavior. The automatic system was shaped by natural selection to trigger quick and reliable action, and it includes parts of the brain that make us feel pleasure and pain (such as the orbitofrontal cortex) and that trigger survival-related motivations (such as the hypothalamus).

If evolution gave men and women different sets of desires and skills, for example, that would be an obstacle to achieving gender equality in many professions. If nativism could be used to justify existing power structures, then nativism must be wrong. (Again, this is a logical error, but this is the way righteous minds work.)

We live in the tension between neophillia, or attraction to new things, and neophobia, or fear of new things.