"The triple world is an inn, the One Mind is the original home."
Kūkai (空海 774–835 c.e.)
Just a note regarding the idea of 'entrenchment,' a little meditative morsel for now. Entrenchment: I'm using it in the sense of being ignorantly immersed in all the ways of the world, being convinced of ideologies, cultures, religions, and everything on the "outside" as law and fixtures. It concerns the baggage of mindstreams that have become inured to repetitive birth and death. Being courageous and fearless alone are not inherent virtues, it is entirely possible to be courageous and fearless in ignorant entrenchment. It is possible to become entrepreneurial and ideological to the point of "losing one's soul," i.e., getting stuck deeper and deeper in the whorl of randomness without destiny, which is the wrong kind of "freedom."
The triple world (world of the past present future) is an inn. When you are a lodger at an inn, you want your room clean, comfortable, pleasant. You want amenities and conveniences to make it a pleasant stay. But it's not a place to set down roots. Eventually you'll have worn out your welcome by the time it's time to check out. In the language of the Jim Morrison school: no one here gets out alive.
The Ray Kurzweil prognosis for humanity is that of eventual immortality. But what is the point of quantitative immortality without an environment that is conducive to a prolonged existence? Even the idea of immortality can be viewed from the standpoint of entrenchment. In fact, the quantitative, materialistic idea of immortality --- of having more and more of the same, of mere technological advancement without tandem evolution of humanity --- is the height of entrenchment.