WHAT AM I?

1)
I never was, but am always to be,
No one has ever, or ever will, see me;
And yet I am the hope and confidence of all,
Who live and breathe on this terrestrial ball.

2)
The beginning of eternity,
The end of time and space;
The beginning of every end,
And the end of every place.

3. A riddle posed to Homer by some fishermen. The legend is that Homer died of frustration at being unable to solve this riddle.

What we caught we left behind, but what we failed to catch we brought home with us.

OR
(What we caught we threw away; what we didn't catch we kept.)

4)

My life can be measured in hours,
I serve by being devoured.
Thin, I'm quick,
Fat, I'm slow,
The wind is ever, ever my foe.

5)
I'm named after nothing,
Though I'm awfully clamorous,
And when I'm not working,
Your house is less glamorous.

Answers:

1. tomorrow
2. the letter "e"
3. fleas (lice)
4. candle
5. vacuum cleaner