[jeangenie]

> The Earth is the only world known, so far, to harbor life.

I often reflect on this sentiment and have half-convinced myself that the current definition of 'life' we use in this sense to be far too limited to capture the infinite diversity of existence.

In other words, our explorations will never reveal any creature like us (or other known forms of life on Earth) because the life that develops in other environment will be uniquely suited and predicated on existing in that environment exclusively.

I would add to what Sagan said: the whole universe is alive in ways we have not yet even conceived or be capable of conceiving.