[mej10]

> So it's hard to consider them part of one living system

You couldn't live without many other organisms both in you and around you.

[roceasta]

That's true; there's cooperation everywhere and at every level. But there's competition too. There are of course many organisms that kill and maim others to make a living.

So the divine unity that the mystics, poets and psychonauts speak of cannot derive from nature per se, as many people believe. In my comment I tried to give an alternate explanation.