From my own experience-the combination of my scientific work and my personal drug use, I have learned that… — Carl L. Hart

I'm now firm in my belief that marijuana is a key ingredient to happiness for a great number of people. What kind of person prevents another's responsible pursuit of happiness? Not a very humane one.

Drugs are inert substances. The evidence tells us that we must look beyond the drug itself when trying to help people with drug addiction.

A broader argument I make within these pages is that adults should be permitted the legal right to sell, purchase, and use recreational drugs of their choice, just as they have the rights to engage in consensual sexual behaviors, drive automobiles, and even purchase and use guns. Of course, all these activities carry some level of risk, including death. But rather than banning sex, cars, or guns, we have implemented age and competence requirements as well as other safety strategies, strategies that minimize harms and enhance positive features associated with these activities. This is already done, of course, with the widely used recreational drug known as alcohol. After reading this book, you will, I hope, come to the inescapable conclusion that the same should be done with other recreational drugs.