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When speaking to an audience it’s better to fix your gaze on a few people than to “spray” your gaze across the room. Your eyes telegraph to others whether you really believe what you are saying.

Energy independence is not just a goal; it's a necessity for national security.

In the quest to understand the cosmos, we must remain humble, for every answer we find leads to a multitude of new questions.

最重要的是要忠于自己和你正在講述的故事。