The opening paragraph is puzzling as it breezily mentions that NB, "even in his youth", was familiar with deep questions regarding the relationship between biology and physics. Neil's Bohr's father was an accomplished and famous physician [1][2]. No doubt father and son had quite interesting discussions over dinner regarding this very topic.

[1]: https://en.wikipedia.org/wiki/Christian_Bohr

[2]: https://en.wikipedia.org/wiki/Bohr_effect