Thomas Edison: A Quote

“The first requisite for success is to develop the ability to focus and apply your mental and physical energies to the problem at hand – without growing weary. Because such thinking is often difficult, there seems to be no limit to which some people will go to avoid the effort and labor that is associated with it….” I have not yet been able to locate where this came from — book, speech, interview, conversation — so I’ll have to go with “caveat emptor” for right now. The quote could be Edison, or it could be someone else, as far as I know…