The famous debate in natural philosophy

Bohr (left) and Albert Einstein, pictured on 11 December 1925, had a long-running debate about the metaphysical implication of quantum physics.

In an interview in the 1970s, Bell summarized his view of the decades long debates:

Einstein was consistent, clear, down-to-earth and wrong.
Bohr was inconsistent, unclear, willfully obscure and right.

It was generally accepted by most physicists that Bohr won and Einstein lost. My own feeling, I think shared by a growing number of physicists, is that this attitude does not do justice to Einstein’s views.
Both Bohr and Einstein were subtle men. Einstein tried very hard to show that quantum mechanics was inconsistent; Bohr, however, was always able to counter his arguments. But in his final attack Einstein pointed to something so deep, so counterintuitive, so troubling, and yet so exciting, that at the beginning of the twenty-first century it has returned to fascinate theoretical physicist. Bohr’s only answer to Einstein’s last great discovery - the discovery of entanglement - was to ignore it. - Quantum Mechanics: The Theoretical Minimum - Preface, by Leonard Susskind & Art Friedman