My favorite stoner had very cogent thoughts on perceived and real fears[0], marijuana usage[1] and our easily manipulated lizard brains[2]. Carl Sagan corrupted me for life.

[0] https://en.wikipedia.org/wiki/Demon_haunted_world

[1] http://marijuana-uses.com/mr-x/

[2] https://en.wikipedia.org/wiki/The_Dragons_of_Eden