translation.en: I'd like to suggest that there are four really powerful cornerstones, foundations, that we can stand on if we want our speech to be powerful and to make change in the world.
translation.zh: 我想建议四种我们可以牢靠站立的 真正强有力的基石或者基础， 如果我们想让我们的言语有力 并且让世界产生变化。