Paul Dirac was the subject of the BBC radio programme <i>In Our Time</i> in March 2020. In the programme, three academics discuss Dirac's life and work . It's a stimulating discussion, although I can't honestly say I fully understood some of the explanations! The episode can be downloaded for offline listening.<p>Near the end of the programme (around the 40 minute mark), the presenter, Melvyn Bragg, asks the guests: why is Dirac so unknown compared to Einstein, Schrödinger, Nils Bohr, etc?<p>One of the guests suggests that Dirac's abstract ideas are very difficult to explain to the general public. Einstein's theory of relativity is difficult to understand too, but over time popular science has attempted to explain it. In contrast, it is very hard to explain Dirac's ideas because of its reliance on mathematics and mathematical structures (even though Dirac's ideas underpin much of modern physics).<p><i>In Our Time: Paul Dirac</i>:<p><a href="https://www.bbc.co.uk/programmes/m000fw0p" rel="nofollow">https://www.bbc.co.uk/programmes/m000fw0p</a>