I think people are curious at some level, and they want to alter their current state of being. I mean, that could be from curiosity, that could be from stress, that can be from some other sort of ailments or problem that they are experiencing or could just be from boredom, but humans have always attempted to alter their consciousness.

The notion that scientists are dispassionate - first of all, that's wrong. Scientists are extremely passionate.

One of the things we know about people is that people are not very courageous in general.

Carl Hart Quotes