To Naruto: A Diary of Sai's Unspoken Thoughts:

The Sun

Darkness should be your only friend

Covering your words, your deeds

Silence should be your only speech-

When not lying.

So why do you shine like the sun,

And face me

Fist, heart, and soul,

Give me laughter and tears

For bread and water?

I cannot eat this, brother

Nor drink that.

Yet I'll choke for you

As you fight for me

While you shine like the sun