《南齐书·列传·卷五十四》
大凡辞却米粮，以烟霞为食的人，祗可以暂时礼请他来，而不宜长久地留住他们。
夫却粒之士，餐霞之人，乃可暂致，不宜久羁。
For those who turn down rice and grains and eat the smoke and clouds, they could only be invited temporarily, but not for a long time. 