The worthwhile problems are the ones you can really solve or help solve, the ones you can really contribute something to. … No problem is too small or too trivial if we can really do something about it.

— Richard Feynman, Letter to Koichi Mano (1966)

Source: http://www.nybooks.com/articles/18350

From a letter dated 3 February 1966 to Koichi Mano, a former doctoral student.

Topics: learning