Classic Poem

Many are they that I remember,
Who have come and passed like wind;
Still others come and pass on,
There are none that stay behind:
Wonderful indeed is this workshop
Which the great Artist has produced.
Look thou well upon that bubble,
What its lasting and its stay.
Thus art thou, didst thou but know it,
In the dust thy pattern see.
Naught dost thou know of thyself;
Ah! how sad the thought to me!
What art thou concerned about?
Be thou just as glad thereafter.
What troubles hast thou seen, Khush-hal?
Sure thy heart is made of steel.