While chatting with a very interesting, dynamic entrepreneur and scientist, the subject of fear was discussed.
While initially the idea that death was our greatest fear, I remembered that studies reveal our greatest fear, or at least what is held at the forefront of our cares and concerns, is public speaking.
It seems to me that public speaking is indicative of our fear of others, not of death. Thinking and chatting on it in more depth, we realised that it is fear of what others think that mostly constrains or limits our behaviours.