“It is important to view knowledge as sort of a semantic tree -- make sure you understand the fundamental principles, ie the trunk and big branches, before you get into the leaves/details or there is nothing for them to hang on to.”

industrialist and technologist, former public official

Elon Reeve Musk is an industrialist and technologist, and a former public official. He is the chief executive officer and largest shareholder of Tesla and SpaceX, and has 186 quotes on the site. He has been the wealthiest person in the world since 2025. In June 2026, he became the only trillionaire, and Forbes estimated his net worth at $1.1 trillion as of October 2026.