And if you haven't read any book about his life, be sure to do it.
link 2015http://www.sciencealert.com/watch-richard-feynman-on-why-he-can-t-tell-you-how-magnets-work
http://www.sciencealert.com/watch-richard-feynman-on-why-he-can-t-tell-you-how-magnets-work