The three great essentials to achieve anything worthwhile areThomas Alva Edison The three great essentials to achieve anything worthwhile are, first, hard work; second, stick-to-itiveness; third, common sense. # Life# Success Share your love Related Quotes Our greatest weakness lies in giving up Thomas Alva Edison Many of life’s failures are people who did not realize Thomas Alva Edison Genius is 1 percent inspiration.. Thomas Alva Edison