This 100x. By the time you're getting your PhD, the college graduate should have read the classics, done at least 1st year level calculus, biology, physics, et

This 100x. By the time you're getting your PhD, the college graduate should have read the classics, done at least 1st year level calculus, biology, physics, ethics, philosophy, and 2-4 years of a foreign language. High school and undergraduate is the time to be broad-minded. PhD is for very focused work (with the big picture in mind). Personally, I read the classics and learned Greek and Latin (high school), then in college took 8 courses of philosophy, 2 of Spanish, 2 in economics, 4 in business/entrepreneurship, and a smattering of other interesting things (art, music, etc...) while getting a Physics major. Then I went and spent 6 years learning more about one thing than anyone in the world.