642 Quotes by Richard P. Feynman

Being the word of God connects the ethical and metaphysical aspects of religion. And finally, that also inspires the inspiration, because if you are working for God and obeying God’s will, you are in some way connected to the universe, your actions have a meaning in the greater world, and that is an inspiring aspect.

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.

Mathematics is not a science from our point of view, in the sense that it is not a natural science. The test of its validity is not experiment. We must, incidentally, make it clear from the beginning that if a thing is not a science, it is not necessarily bad. For example, love is not a science. So, if something is said not to be a science, it does not mean that there is something wrong with it; it just means that it is not a science.

I’ve very often made mistakes in my physics by thinking the theory isn’t as good as it really is, thinking that there are lots of complications that are going to spoil it – an attitude that anything can happen, in spite of what you’re pretty sure should happen.

I have a limited intelligence and I’ve used it in a particular direction.

I can’t understand anything in general unless I’m carrying along in my mind a specific example and watching it go. Some people think in the beginning that I’m kind of slow and I don’t understand the problem, because I ask a lot of these “dumb” questions:.

If you’re doing an experiment, you should report everything that you think might make it invalid – not only what you think is right about it: other causes that could possibly explain your results; and things you thought of that you’ve eliminated by some other experiment, and how they worked – to make sure the other fellow can tell they have been eliminated.

Trees are made of air, primarily. When they are burned, they go back to air, and in the flaming heat is released the flaming heat of the Sun which was bound in to convert the air into tree. And in the ash is the small remnant of the part which did not come from air, that came from the solid earth, instead.

Because “extra-difficult popular physics books” scare publishers half to death. Hawking famously said that every equation halves the sale of a popular book.