Riddles, for the Library Options

[stargate525]

We in the building thread have decided that for some hidden elements of the library, the password will be in the form of a riddle. Now I thought this would be a good way to get new riddles and have some fun too. My first five; see if you can figure them out and tell me if they are too easy.

Blade without pommel, hilt, or edge.
Warriors trample,
Alchemists prize.
Enormous in number, not size.

Has legs but does not walk,
has a back without a spine.
sometimes wood, sometimes stone,
often arranged in a line.

It burns without fire,
lights without heat.
Ever rising, ever lowering,
the perfect lamp ever designed.

Weapons like daggers,
armor like mail.
Your death is its breath,
but on a beach it will die.

lowers mountains, widens streams, destroys towns.
no wall can stop it, no man can dodge it.
It waits on no one, but slows for those expectant.



please feel free to contribute.

[Red]

Ok, I guess I'll add the ones I was working on a few days ago. By the way, I made these, so don't think you'll get the answers so soon.

His beauty shines bright,
and then it darkens.
A line divides him,
but shows history.

Smart you must be,
to kill with me.
Thoughtful you must be,
to wield my power.

The tiles of the floor make a picture of a bear.
An Imperial hidden among letters and words. Follow closely.
First the fourth and fifth, then the thirty-fourth, then the thirty-fifth, followed by the thirty-seventh.

Inside of us it lives.
A wepon, even a sealent for the re-living.
It can help or hurt your beautiful life.
The masters can find infanite life.

Dancing over the melting base,
I hurt those who would dare dance with me.

You lose, I gain.
You drop, I bring you up.
You die, you live.
I am the cause of these and more,
What am I?