後記: 台北京站華陰街側鐵捲門有幅異國情調露天咖啡座街景，
上面是莎士比亞情詩 Sonnet 116。愛如燈塔，如明星，給予迷
航船隻方向。愛情永恆不變。

不過我單純覺得，愛情頂多就像路口的紅綠燈，或是飛在空中
的紅白塑膠袋，不可或缺，但只是生活的一部分。沒那麼崇高，
而且永遠在變。

變，似乎沒有甚麼不好，因為燈號的變幻，我們才能向前走。
才能去承當，去祝福，去包容。

以下為 Sonnet 116 原文：

Let me not to the marriage of true minds
 Admit impediments. Love is not love
Which alters when it alteration finds,
 Or bends with the remover to remove:
O no! it is an ever-fixed mark
 That looks on tempests and is never shaken;
It is the star to every wandering bark,
 Whose worth's unknown, although his height be taken.
Love's not Time's fool, though rosy lips and cheeks
 Within his bending sickle's compass come:
Love alters not with his brief hours and weeks,
 But bears it out even to the edge of doom.
If this be error and upon me proved,
 I never writ, nor no man ever loved.