Depending on your request, "10,000 Books" can refer to a few different things: a literal library threshold, a philosophical concept regarding reading habits, or specific organizational projects (like the "10,000 Books" movement in literacy).
Warren Buffett estimates he spends 80% of his day reading. If you treat reading as your primary job (8 hours a day), you could finish a book in 1.5 to 2 hours. Reading 6 books a week yields 312 books a year. To hit 10,000, you need approximately 32 years of full-time reading. 10000 Books