You are always a valuable, worthwhile human being — not because anybody says so, not because you're successful, not because you make a lot of money — but because you decide to believe it and for no other reason.

The flesh is sad, alas, and I have read all the books.

With a library you are free, not confined by temporary political climates. It is the most democratic of institutions because no one - but no one at all - can tell you what to read and when and how.

演讲者应让听众充分相信，他已竭尽全力为他们带来愉悦与教益。

成功不在于金钱或名声，而在于你对他人产生的影响。

跨行业合作是解决世界能源挑战的关键。