【心动的一句】You, of course, are a rose

猜猜这诗是谁写的？写的是什么意思？

The rose is a rose,
And was always a rose.
But the theory now goes
That the apple’s a rose,
And the pear is, and so’s
The plum, I suppose.
The dear only knows
What will next prove a rose.
You, of course, are a rose –
But were always a rose.