No, English.SE is certainly not the right place for such a search: your question does not relate to any issue about the English language. It isn't really suitable for any Stack Exchange site, since 'quotations' like this buzz around the Internet at high speed, altering a word here and being rephrased there, until even the original author wouldn't recognize the popularised version.
You could try Philosophy.SE or another SE site in the field where you think this arose. Note, however, that I know of no site where a bald "where is this from" is welcome as a question: the best approach would be to join the site, gain a little reputation from sensible questions or good answers, and then ask in the chatroom.
Otherwise, you will have to rely on your search-engine skills. Even then, though, I would caution you against accepting the first answer you come up with; many such phrases turn out to have been invented by motivational speakers or so-called 'educators', who then felt the need to attribute the words to some figure well-respected in whatever field is under discussion, regardless of what this figure would have thought of the 'quotation'.