[ Cloud, not being quite as developed as the Cloud that Sephiroth remembers, isn't so sure about the significance of the "cherish" comment. Who does Cloud have that he cherishes so much? He's got nobody to go back to. His only friends who would even want him around are here right now... ]

My most important goal is making sure you don't harm the planet. If it means being trapped here with you, I'll gladly throw away the key.

I'll never help you leave this place, Sephiroth.