After a while, friends who saw him dressed in his finest clothes would know that his work wasn't going well, whereas if he left his house for a bite to eat while whistling, dressed casually with messy hair, then all was going smoothly.
久而久之，瞭解他的朋友看到他打扮整齊出門，就知道他畫得不順；如果只是隨便披件外衣、頭髮微亂地吹著口哨出門用餐，反倒是畫的正得心應手呢。