《梦溪笔谈·象数一》
并不是天文家不想将它们均匀划分，而是在太阳所运行的黄道上能够当作分度界点的，也就只有这些而已了。 
非不欲均也。黄道所由当度之星，止有此而已。 
It is not that astronomers do not want to divide them evenly, but the ecliptic on which the sun runs can only be used as a dividing point, that's all.