"When I'm the speaker, I know that special moment [just before speaking] is the only time I will have the entire audience's full attention. Unless an alien spaceship crash-lands on stage midway through the talk, the silence before I begin is the most powerful moment I have. What defines how well I'll do starts with how I use the power of that moment."

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The future. Space travel, or cosmology. Alternate universes. Time travel. Robots. Marvelous inventions. Immortality. Catastrophes. Aliens. Superman. Other dimensions. Inner space, or the psyche. These are the ideas that are essential to science fiction. The phenomena change, the basic ideas do not. These ideas are the same philosophical concepts that have intrigued mankind throughout history.

— Kate Wilhelm