Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.

When it comes to atoms, language can be used only as in poetry.

We are trapped by language to such a degree that every attempt to formulate insight is a play on words.

Opposites are not contradictory but complementary.

Predictions are hard, especially abot the future.

In physics we deal with states of affairs much simpler than those of psychology and yet we again and again learn that our task is not to investigate the essence of things-we do not at all know what this would mean&mash;but to develop those concepts that allow us to speak with each other about the events of nature in a fruitful manner.

One thought spectra are marvellous, but it is not possible to make progress there. Just as if you have the wing of a butterfly then certainly it is very regular with the colors and so on, but nobody thought one could get the basis of biology from the coloring of the wing of a butterfly.