It's Always Greener on the Other Side.

这山望着那山高,别处的草儿更绿,得陇望蜀

 

G：Sunshine, you got a bad case of puppy love?]
A：What a day. I mean, it just doesn't get any better than this, you know?
Even the star's out. Not going to find a star like that in the wild.
Marty. Buddy. Listen. Everybody has days when they think the grass might be greener somewhere else.
M：Alex. Look at me. I'm ten years old. My life is half over.
And I don't even know if I'm black with white stripes or white with black stripes.
A：Marty, I'm thinking of a song. It's a wonderful song. I think you're familiar with it.