Whence come I and whither go I? That is the great unfathomable question. Science has no answer to it.

If we are going t stick to this damned quantum-jumping, then I regret that I ever had anything to do with quantum theory.

Science cannot tell us a word about why music delights us, of why and how an old song can move us to tears.

The verbal interpretation, on the other hand, i.e. the metaphysics of quantum physics, is on far less solid ground. In fact, in more than forty years physicists have not been able to provide a clear metaphysical model.

An animal that embarks on forming states without greatly restricting egoism will perish.

In this communication I wish first to show in the simplest case of the hydrogen atom (nonrelativistic and undistorted) that the usual rates for quantization can be replaced by another requirement, in which mention of "whole numbers" no longer occurs. Instead the integers occur in the same natural way as the integers specifying the number of nodes in a vibrating string. The new conception can be generalized, and I believe it touches the deepest meaning of the quantum rules.

A careful analysis of the process of observation in atomic physics has shown that the subatomic particles have no meaning as isolated entities, but can only be understood as interconnections between the preparation of an experiment and the subsequent measurement.