Essays / Need help with a 'compare and contras' essay: TITHONUS & SONG OF MYSELF [2]

I have to write a "compare and contrast" essay :

"Examine the views of nature in "Song of Myself" by Walt Whitman and "Tithonus" by Tennyson.

I'm totally brain farting.

So far my thesis is something like this:

"The cycle of life and death is the most basic rule of nature"

What do you think? Song of myself doesn't talk much about death except a couple of stanzas near the end...

I have to write about the speaker's:

--Situation
--Attitude or emotion towards the situation
--Changes in attitude or emotion
--Symbols, similies and metaphores if they relate to my thesis.

I got nothing :(

Is anyone familiar with these poems that can help me out with ideas?

Thanks a lot.

Lila.