The document summarizes the debate between MengZi and XunZi on the nature of human nature - whether it is inherently good or evil. MengZi believed human nature is intrinsically good, as people are born with four innate seeds of goodness (pity, right and wrong, good and evil, truth and falsity). These seeds can be cultivated through education and learning into virtues. XunZi argued human nature is inherently evil, as people are born with desires and tendencies that lead to strife and harm if not controlled through rules, laws, and cultivation of character. For XunZi, goodness is an acquired quality, not something innate, as human nature must be transformed and polished through education and effort.