Une façon de penser
11:38
Alan Watts For When You Need To Stop Thinking
16:54
Carl Sagan testifying before Congress in 1985 on climate change
7:05
Carl Sagan - Who Speaks for Earth?
7:24
Cosmos - Carl Sagan - 4th Dimension
1:01:36
Carl Sagans Cosmos - Episode 8 - Journeys in Space & Time
20:28
Carl Sagan's last interview with Charlie Rose (Full Interview)
17:55
Alan Watts Opens Up About Religion (thought provoking video)
14:49