"One cannot inquire into the foundations and nature of mathematics without delving into the question of the operations by which the mathematical activity of the mind is conducted. If one failed to take that into account, then one would be left studying only the language in which mathematics is represented rather than the essence of mathematics."
-- Luitzen Egbertus Jan Brouwer (https://en.wikipedia.org/wiki/L._E._J._Brouwer).
Relevant Reference Link:
https://www.researchgate.net/post/Why_is_the_Riemann_Hypothesis_true2
http://www.dtc.umn.edu/~odlyZko/doc/zeta.html
http://www-personal.umich.edu/~hlm/paircor1.pdf
https://en.wikipedia.org/wiki/Riemann_hypothesis
https://en.wikipedia.org/wiki/Generalized_Riemann_hypothesis