你不是通过遵循规则学会走路的。你是通过实践和跌倒学会的。
You don't learn to walk by following rules. You learn by doing, and by falling over.
Speech is a kind of action, and our words are the tools we use to perform it.
我们能种植的最有价值的作物是生产者和消费者之间的信任。