The history of science shows that the progress of science has constantly been hampered by the tyrannical influence of certain conceptions that finally came to be considered as dogma. For this reason, it is proper to submit periodically to a very searching examination, principles that we have come to assume without any more discussion.
Will Quantum Physics Remain Indeterministic, in Louis de Broglie (1953). The revolution in physics: a non-mathematical survey of quanta. Noonday Press. p. 237.
It seems a little paradoxical to construct a configuration space with the coordinates of points which do not exist.Louis De Broglie
The actual state of our knowledge is always provisional and ... there must be, beyond what is actually known, immense new regions to discover.Louis De Broglie
I was particularly won over by his sweet disposition, by his general kindness, by his simplicity, and by his friendliness.Louis De Broglie