His rationality and Phoebe 's eccentricity lead to conflict over evolution , gravity , and whether Phoebe 's mother was reincarnated as a cat .
Ross often comes into conflict with his close friend , Phoebe Buffay .
Ross ' rationality Phoebe Buffay Phoebe 's eccentricity lead to conflict over evolution , gravity , and Phoebe Buffay Phoebe 's mother was reincarnated as a cat .
Ross often comes into conflict with his close friend , Phoebe Buffay .