My critique of how we deal with drugs in society is just that - that we use these anecdotes to apply to everyone and the anecdotes are not representative.

We need to continuously put pressure on politicians to do more, because they are happy just to do nothing—it’s easier to do nothing.

The way we're currently educating people about heroin is to say that heroin is so awful. Heroin is not so much the problem. It's when you combine it. It's hard to die from heroin alone.

High Price: A Neuroscientist's Journey of Self-Discovery That Challenges Everything You Know About Drugs and Society.

Much of the early work focused on dopamine and we were really looking for rewarding sorts of effects and sure enough, we only found that. But you can destroy the main dopamine-producing structures of the brain and you can still get an animal to self-administer drugs like cocaine.

Dopamine makes up less than one percent of the brain's neurotransmitters. It's a small portion. Dopamine is released when people are happy, angry, stressed. So it's really hard to call this specific neurotransmitter "the pleasure neurotransmitter."

One of the things that has happened is that our drug laws have been institutionalized now. If you want to say that somebody's a bad person in a movie or in a television show or something about that, you say they sell drugs or they use drugs.