Every great and deep difficulty bears in itself its own solution. It forces us to change our thinking in order to find it.
Niels Bohr
An expert is someone who knows some of the worst mistakes, which can be made, in a very narrow field.
Niels Bohr
An expert is a man who has made all the mistakes which can be made in a very narrow field.
Niels Bohr
An expert is a person who has made all the mistakes that can be made in a very narrow field.
Niels Bohr