《南齐书·列传·卷三十九》
刘瓛出园后，太祖回头对司徒褚渊说： 这般正直，学士毕竟超过常人。 
既出，帝顾谓司徒褚渊曰： 方直乃尔！学士故自过人。 
After Liu Huan left the garden, the Emperor turned to his Tutor Chu Yuan and said: Compared to ordinary people, scholars are much more honest and just.