An expert is a man who has made all the mistakes which can be made, in a narrow field. Niels Bohr More Quotes by Niels Bohr More Quotes From Niels Bohr We all know your idea is crazy. The question is whether it is crazy enough. Niels Bohr madness crazy ideas A person who wasn't outraged on first hearing about quantum theory didn't understand what had been said. Niels Bohr hearing funny science Predictions are hard, especially abot the future. Niels Bohr predictions hard You can recognize a small truth because its opposite is a falsehood. The opposite of a great truth is another truth. Niels Bohr truth-and-falsehood truth-is opposites If you aren't confused by quantum mechanics, you haven't really understood it. Niels Bohr mechanic confused science Of course I don't believe in it [pointing to horseshoe on his office wall]. But I understand that it brings you luck whether you believe in it or not. Niels Bohr wall faith believe Some things are so serious, they can only be joked about. Niels Bohr serious Prediction is difficult, especially the future. Niels Bohr predictions difficult science Prediction is very difficult, especially about the future. Niels Bohr The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth. Niels Bohr An expert is a person who has made all the mistakes that can be made in a very narrow field. Niels Bohr While the finish given to our picture of the world by the theory of relativity has already been absorbed into the general scientific consciousness, this has scarcely occurred to the same extent with those aspects of the general problem of knowledge which have been elucidated by the quantum theory. Niels Bohr picture problem world knowledge Humanity will... be confronted with dangers of unprecedented character unless, in due time, measures can be taken to forestall a disastrous competition in such formidable armaments and to establish an international control of the manufacture and use of the powerful materials. Niels Bohr competition humanity time character Every description of natural processes must be based on ideas which have been introduced and defined by the classical theory. Niels Bohr description theory natural ideas
