Never express yourself more clearly than you are able to think.
Prediction is very difficult, especially if it's about the future.
You can recognize a small truth because its opposite is a falsehood. The opposite of a great truth is another truth.
It is wrong to think that the task of physics is to find out how nature is. Physics concerns what we say about nature.
Predition is risky, especially of the future.
Predictions are hard, especially abot the future.