Philosophy - Terence Mckenna

This is a great introduction to an academic thinker that was a scientific rationalist turned spiritualist through the use and investigation of psychedelics. His voice is hypnotic and full of charisma. He practices shamanic principles and interests lay in the east.
Unfortunately the man passed on a few years ago but his lectures and books influenced many people and he pushed the envelope thinking and what it is to be a human, alive, alone in the infinite abyss of mind.
Many of his other lectures are up on youTube, such as
Seeking the stone - a general outlook on His methods and rational in thinking
Psychedelics in the age of intelligent machines
Culture is not your friend
Talks on DMT

A very interesting man and worth any creative minds attention