"A certain heathen came to Shammai and said to him, Make me a proselyte, on condition that you teach me the whole Torah while I stand on one foot. Thereupon he repulsed him with the rod which was in his hand. When he went to Hillel, he said to him, What is hateful to you, do not do to your neighbor: that is the whole Torah; all the rest of it is commentary; go and learn."