Character sketch of Jim Hawkin in Treasure Island?

Jim Hawkins

The first-person narrator of almost the entire novel. Jim is the son of an innkeeper near Bristol, England, and is probably in his early teens. He is eager and enthusiastic to go to sea and hunt for treasure. He is a modest narrator, never boasting of the remarkable courage and heroism he consistently displays. Jim is often impulsive and impetuous, but he exhibits increasing sensitivity and wisdom.

Explanation:

in our power to make a world happy - to teach mankind the art of being so - to a character hitherto unknown - and to have, as it were, a new creation intrusted to our hands, are honors that command reflection, and can neither be too highly estimated,