translation.en: It's when your welfare conduces to mine, that I decide, oh yeah, I'm all in favor of your welfare. That's what's responsible for this growth of this moral progress so far, and I'm saying we once again have a correlation of fortunes, and if people respond to it intelligently, we will see the development of tolerance and so on -- the norms that we need, you know.
translation.zh: 当你的福利也能带给我福利，那么行呀， 我绝对为你的福利着想。 这个就是道德进步的源动力。 我再强调一遍，我们的命运紧紧相连。 如果人们采取明智的回应， 我们将看到更多的包容，以及 其他我们所需要的东西。