Nothing in the world is worth having or worth doing unless it means effort, pain, difficulty… I have never in my life envied a human being who led an easy life. I have envied a great many people who led difficult lives and led them well.

Theodore Roosevelt

These are some of the books I've read, Take a look and wondering what to read next:

People think of education as something they can finish
— Isaac Asimov
I have never let my schooling interfere with my education
— Mark Twain