Answer:
He's small but he can climb a tower.
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What is the middle of water but is not an island?
I am the first you ever saw, what greets you every morning and what goes out in the end.
With sharp edged wit and pointed poise. It can settle disputes without making a noise.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.