If you want to build a ship, don't drum up people to collect wood and don't assign them tasks and work, but rather teach them to long for the endless immensity of the sea.
-- Antoine de Saint-Exupery
Also related, I recently wrote an essay about how bad managers are like flailing curlers, while leaders act like kindergarten teachers:
For e.g., if you have the capability to create the team you want for achieving your goal, you are a leader. If you have to make to do with a team given to you, you are a manager.
Etc: https://duckduckgo.com/?q=Leaders+lead+people.+Managers+mana...
https://www.amazon.com/Good-Great-Some-Companies-Others/dp/0...
In short a manager's job is smooth out the bumps, make all the little things go right. A leader sets the direction, inspires people, etc.