The purpose of abstraction is not to be vague, but to create a new semantic level in which one can be absolutely precise.
在数学中，你并不理解事物。你只是习惯了它们。
The development of the drone industry is ultimately to serve humans, not to replace them.
Diversity in leadership brings different perspectives that drive better decision-making.
Be governed not by the tyranny of the urgent but by the elevation of the important.