"The environment determines the behavior of the individual, not some inner 'will.'"

"Democracy is a technique for preserving freedom, but it is not necessarily the best technique."

"The problem is not to adjust people to the world they live in, but to adjust the world to the people who live in it."

"Freedom is a matter of contingencies of reinforcement, not of some inner state of mind."

"The organism is not an empty organism, but a very complex system."