Men of great physical strength have sometimes carried outrageously heavy burdens—six hundred pounds, seven hundred pounds, eight hundred. And even then they have said, “I still have not been fully tested. Put on some more weight! Load me up!” With confidence they have gripped the bar and with great straining and groaning they have lifted it clear of the ground. Yet in every case, they have eventually reached a point where they have had to cry out, “Stop! I have hit my limit. I cannot carry any more weight.