If you thought that science was certain - well, that is just an error on your part.

The same equations have the same solutions

We are lucky to live in an age in which we are still making discoveries.

Computer science is not as old as physics; it lags by a couple of hundred years. However, this does not mean that there is significantly less on the computer scientist's plate than on the physicist's: younger it may be, but it has had a far more intense upbringing!

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

There is enough energy in a single cubic meter of space to boil all the oceans in the world.

It is surprising that people do not believe that there is imagination in science. It is a very interesting kind of imagination, unlike that of the artist. The great difficulty is in trying to imagine something that you have never seen, that is consistent in every detail with what has already been seen, and that is different from what has been thought of; furthermore, it must be definite and not a vague proposition. That is indeed difficult.