《论衡·卷十一·说日篇》
天离人六万多里。抬头看十个太阳，会眼光昏花，因为阳光太明亮了，人无法忍受。
天之去人万里余也，仰察之，日光眩耀，火光盛明，不能堪也。
The sky is over sixty thousand miles from people. Looking up at ten suns, our eyes will be dim, because the sunlight is too bright, unbearable to people.