642 Quotes by Richard P. Feynman


  • Author Richard P. Feynman
  • Quote

    People are always asking for the latest developments in the unification of this theory with that theory, and they don't give us a chance to tell them anything about what we know pretty well. They always want to know the things we don't know.

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  • Author Richard P. Feynman
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    Strange! I don't understand how it is that we can write mathematical expressions and calculate what the thing is going to do without being able to picture it.

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  • Author Richard P. Feynman
  • Quote

    Quarks came in a number of varieties - in fact, at first, only three were needed to explain all the hundreds of particles and the different kinds of quarks - they are called u-type, d-type, s-type.

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  • Author Richard P. Feynman
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    If you know that you are not sure, you have a chance to improve the situation. I want to demand this freedom for future generations.

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  • Author Richard P. Feynman
  • Quote

    It requires a much higher degree of imagination to understand the electromagnetic field than to understand invisible angels. ... I speak of the E and B fields and wave my arms and you may imagine that I can see them ... [but] I cannot really make a picture that is even nearly like the true waves.

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