Where is everybody? Humans could theoretically colonize the galaxy in a million years or so, and if they could, astronauts from older civilizations could do the same. So why haven't They come to Earth?
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"Physics is like sex: sure, it may give some practical results, but that's not why we do it."
"I am not afraid of death, because I know that I have lived a full life."
"I have always believed that physics should be simple and beautiful."
"One day, when I was a student, I was reading a book on quantum mechanics, and I came across a sentence that said: 'The electron is a wave, and the electron is a particle.' I was very confused, because…"
"I believe that science is the key to understanding the universe, and to solving the problems of humanity."
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