That's because the most competent among them will always try to change that small part of the world which they know. One of these days they'll discover the world instead of improving it, and not forget what they already discovered.
The quote reflects on the idea that highly capable individuals often focus on making improvements in their immediate surroundings. Their efforts might lead them to gradually expand their understanding and influence. This journey of personal discovery can eventually open their eyes to the broader world beyond their initial focus.
As they navigate their efforts to effect change, these individuals may find that their perspective shifts from merely enhancing a small area...