Authors:

I do think that taking these sort of natural mind-opening and altering drugs does have an effect. Doors and windows that you didn't even know were in the house are open and you're seeing views you've never noticed before. Even though, when you come down, the world sort of goes back to the way it was, an inkling of that transformed vision and experience of the world remains. I think it's a little bit medicinal, and over time it sort of builds up a new experience of the world. That's when I think smoking pot and doing drugs is really good for you, spiritually speaking.

Source: www.interviewmagazine.com
I do think that taking these sort of natural mind-opening and altering drugs does have an effect. Doors and windows that you didn't even know were in the house are open and you're seeing views you've never noticed