If speculative ideas can not be tested, they're not science; they don't even rise to the level of being wrong..

The best that most of us can hope to achieve in physics is simply to misunderstand at a deeper level..

The layman always means, when he says "reality" that he is speaking of something self-evidently known; whereas to me it seems the most important and ….

I have done a terrible thing, I have postulated a particle that cannot be detected..

Physics is very muddled again at the moment; it is much too hard for me anyway, and I wish I were a movie comedian or something like that and had nev….

God made the bulk; the surface was invented by the devil..

You know, what Einstein has just said isn't so stupid..

Everything comes to him who knows how to wait..

It is not only not right, it is not even wrong..

That's not right. That's not even wrong..

I confess, that very different from you, I do find sometimes scientific inspiration in mysticism ... but this is counterbalanced by an immediate sens….

Well, our friend Dirac, too, has a religion, and its guiding principle is "God does not exist and Dirac is His prophet.".

The fact that the author thinks slowly is not serious, but the fact that he publishes faster than he thinks is inexcusable..

Modern man, seeking a middle position in the evaluation of sense impression and thought, can, following Plato , interpret the process of understandin….

How can one avoid despondency if one thinks of the anomalous Zeeman effect?.

I refuse to believe that God is a weak left-hander..

For quite a while I have set for myself the rule if a theoretician says 'universal' it just means pure nonsense..

When one analyzes the pre-conscious step to concepts, one always finds ideas which consist of 'symbolic images.' The first step to thinking is a pain….

What really matters for me is ... the more active role of the observer in quantum physics ... According to quantum physics the observer has indeed a ….

To us ... the only acceptable point of view appears to be the one that recognizes both sides of reality-the quantitative and the qualitative, the phy….

A colleague who met me strolling rather aimlessly in the beautiful streets of Copenhagen said to me in a friendly manner, "You look very unhappy"; wh….