The only real happiness comes from squandering ourselves for a purpose.
解释:发出的言辞美好,得到的回应就美好;发出的言辞丑恶,得到的回应就丑恶。
The major credit I think Jim and I deserve... is for selecting the right problem and sticking to it.
我认为我和吉姆值得称赞的主要原因是...选择了正确的问题并坚持研究它。