(Joan,1941) She wrote me a letter asking,"How can I read it?,Its so hard." I told her to start at the beginning and read as far as you can get until you're lost. Then start again at the beginning and keep working through until you can understand the whole book. And thats what she did

To test whether you have learned an idea or a definition, rephrase what you just learned without using the new word.

There is nothing that living things do that cannot be understood from the point of view that they are made of atoms acting according to the laws of physics.

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.

Ordinarily it would take me about fifteen minutes to get a hallucination going," wrote Feynman, "but on a few occasions, when I smoked some marijuana beforehand, it came very quickly.

We have been led to imagine all sorts of things infinitely more marvelous than the imagining of poets and dreamers of the past. It shows that the imagination of nature is far, far greater than the imagination of man. For instance, how much more remarkable it is for us all to be stuck-half of us upside down-by a mysterious attraction, to a spinning ball that has been swinging in space for billions of years, than to be carried on the back of an elephant supported on a tortoise swimming in a bottomless sea.

An ordinary fool isn't a faker; an honest fool is all right. But a dishonest fool is terrible!