The{a} mental features discoursed of as the analytical{a′} are, in themselves, but little, susceptible of analysis.
still found it hard to fully understand this, but Edgar put it in the beginning of the story, it should be an important or inspiring idea.
As the strong man exults in his physical ability, delighting in such exercises as call his muscles into action,(1) so glories the analyst in that moral activity which disentangles.
Although the wording is quite complex and difficult throughout the passage, but I think with this explanation makes me understand it better. (a man showing muscles just like analyst solving problems, both have its own happiness)
He is fond of enigmas, of conundrums, of hieroglyphics; exhibiting in his solutions of each{b} a degree of acumen{c} which appears to the ordinary apprehension præternatural.
ok then that's why he can be a detective, I even have no idea about the wording here...literally looking up for the words all the time...