水木年华的一生有你中的词出自哪首诗的？

出自叶芝的《When You Are Old 》。
原文：When you are old
When you are old and grey and full of sleep,
And nodding by the fire, take down this book,
And slowly read, and dream of the soft look
Your eyes had once, and of their shadows deep;
How many loved your moments of glad grace,
And loved your beauty with love false or true,
But one man loved the pilgrim Soul in you,
And loved the sorrows of your changing face;
And bending down beside the glowing bars,
Murmur, a little sadly, how Love fled
And paced upon the mountains overhead
And hid his face amid a crowd of stars.

当你老了 冰心译
当你老了，头发花白，睡意沉沉，
倦坐在炉边，取下这本书来，
慢慢读着，追梦当年的眼神
那柔美的神采与深幽的晕影。
多少人爱过你青春的片影，
爱过你的美貌，以虚伪或是真情，
惟独一人爱你那朝圣者的心，
爱你哀戚的脸上岁月的留痕。
在炉栅边，你弯下了腰，
低语着，带着浅浅的伤感，
爱情是怎样逝去，又怎样步上群山，
怎样在繁星之间藏住了脸。

是出自叶芝的《When You Are Old》

When You Are Old

When you are old and gray and full of sleep
And nodding by the fire,take down this book,
And slowly read,and dream of the soft look
Your eyes had once,and of their shadows deep;
How many loved your moments of glad grace,
And loved your beauty with love false or true;
But one man loved the pilgrim soul in you,
And loved the sorrows of your changing face;
And bending down beside the glowing bars,
Murmur,a little sadly,how love fled
And paced upon the mountains overhead,
And hid his face amid a crowd of stars.

<当你老了>

当你老了，头白了，睡思昏沉，
炉火旁打盹，请取下这部诗歌，
慢慢读，回想你过去眼神的柔和
回想它们过去的浓重的阴影；
多少人爱你年轻欢畅的时候
爱慕你的美貌,出于假意或真心，
只有一个人爱你那朝圣者的灵魂，
爱你老去的容颜的痛苦的皱纹。
躬身在红光闪耀的炉火旁，
凄然的低语，爱为何消逝，
在头顶的山上他缓缓踱着步子，
将脸隐没在了群星之中。

一生有你