The study of black holes has led us to the edge of our understanding, where the known laws of physics break down and new theories must emerge.
出自先秦《荀子·非十二子》。尊重贤能的人,是“仁”的表现,鄙视道德不好的人,也是“仁”的表现。说明“仁”正反两个方面的标准。