The line between good and evil is permeable and almost anyone can be induced to cross it when pressured by situational forces.

Meaning of the quote

The quote means that the difference between good and bad behavior is not always clear. Situations can influence people to do things they wouldn't normally do, even if those actions are wrong. Pressure from the environment or other people can make it easy for someone to cross that line, even if they are usually a good person.

About Philip Zimbardo

Philip Zimbardo is an American psychologist who is best known for his 1971 Stanford prison experiment. He has authored numerous psychology textbooks and other notable works, and is the initiator and president of the Heroic Imagination Project.

More about the author

More quotes from Philip Zimbardo

Evil is knowing better, but willingly doing worse.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Prejudice and discrimination have always been a big part of my life. When I was 6, I got beat up and called dirty Jew boy because they thought I looked Jewish.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

The level of shyness has gone up dramatically in the last decade. I think shyness is an index of social pathology rather than a pathology of the individual.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

One can’t live mindfully without being enmeshed in psychological processes that are around us.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

The Stanford prison experiment came out of class exercises in which I encouraged students to understand the dynamics of prison life.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Human behavior is incredibly pliable, plastic.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

I have been primarily interested in how and why ordinary people do unusual things, things that seem alien to their natures. Why do good people sometimes act evil? Why do smart people sometimes do dumb or irrational things?

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

I started studying shyness in adults in 1972. Shyness operates at so many different levels. Out of that research came the Stanford shyness clinic in 1977.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

My early childhood prepared me to be a social psychologist. I grew up in a South Bronx ghetto in a very poor family. From Sicilian origin, I was the first person in my family to complete high school, let alone go to college.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

I was discriminated against because I was Jewish, Italian, black and Puerto Rican. But maybe the worst prejudice I experienced was against the poor. I grew up on welfare and often had to move in the middle of the night because we couldn’t pay the rent.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Careers in virtually all academic disciplines are fostered by being a superstar who knows more about one subject than anyone else in the world.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

There are no limits to what I would do to make my classes exciting, interesting, unpredictable.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Situational variables can exert powerful influences over human behavior, more so that we recognize or acknowledge.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

After doing psychology for half a century, my passion for all of it is greater than ever.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Time perspective is one of the most powerful influences on all of human behavior. We’re trying to show how people become biased to being exclusively past-, present- or future-oriented.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Heroes are those who can somehow resist the power of the situation and act out of noble motives, or behave in ways that do not demean others when they easily can.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Academic success depends on research and publications.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

At North Hollywood High School, I was shunned by everyone. I would sit down in the cafeteria, and students would get up from the table and walk away. They thought I was from the Mafia.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

What happens when good people are put into an evil place? Do they triumph or does the situation dominate their past history and morality?

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

The line between good and evil is permeable and almost anyone can be induced to cross it when pressured by situational forces.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

Being hurt personally triggered a curiosity about how such beliefs are formed.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment

What troubles me is the Internet and the electronic technology revolution. Shyness is fueled in part by so many people spending huge amounts of time alone, isolated on e-mail, in chat rooms, which reduces their face-to-face contact with other people.

Philip Zimbardo

American social psychologist, author of Stanford Prison Experiment