I am born in thought yet move like a stream, I can spark a fire or snuff out a dream. I leave no shadow, I carve no stone, Yet empires fall by what I’ve shown.

I’m used every day, but I’m never kept forever. I work best when I’m sharp, yet I’m meant to become dull. I take something away, but I never steal.

A medical marvel derived from mold, Killing bacteria, but can't hurt a cold -- Take out its in, one L, and the first of its eyes, And you'll find me hidden inside. Still made from nature, but I'm quite dead; Indeed, you see, I'm all full of lead.

I travel the world but have no legs, I carry your words without any pegs. I can bring joy or deliver despair, And reach you quickly from anywhere.

I follow you close but never lead, I grow or shrink with light’s own speed. I have no voice, no weight, no form, Yet flee the dark and die at noon.