Once you've been Hurt you learn to Hate - Jiraiya

Once you've been hurt you learn to hate - Jiraiya Jiraiya: Once you've been hurt, you learn to hate, but if you hurt another, you've become hated and you shoulder a sense of guilt. But it is because one understands such pain, that generosity towards others becomes second nature that's what makes us human. It's a process called growing up.