[jennyp]

There is good reason to believe that your quest for truth is doomed, since there is a good chance humanity will annhiliate itself before we can find it. It is also quite possible it is unattainable, due to the vastness of the universe and the obvious physical constraints it presents, in terms of exploring it.

If this is true, truth will be humanities' empty chalice.

Not if the journey is its own reward. I believe that's pretty much how we're made. Otherwise, we'd have abandoned the quest for knowledge as soon as we attained some absolute measure of comfort & security. But that's not the way the mind works: We tend to seek comfort & security relative to what we have now. Thus the neverending journey.

[AndrewC]

But that's not the way the mind works: We tend to seek comfort & security relative to what we have now.

Not everyone thinks that way, though that is a "natural" tendency.