First just a minor typo, I'm pretty sure you meant to write taught instead of thought.
The impression I get from this poem is that someone has recently died, and someone else is remembering them, and the help that person gave them in living. I especially like the last line.
It's a pity the dictionary has only one definition of beauty. In my world, there are 7.9 billion types of it- all different and still beautiful. — anne27