“Would you accept something like this: In exchange for your lifelong unhappiness and misery, the whole world will be happy and prosperous! Would you accept such a sacrifice? If you say you will, it means you are a great self-sacrificing person! But if you say 'I can't, because everyone should be happy without exception', you understand the concept of justice very well, because if even one person remains unhappy in the world, justice will not be done!”