His months spent researching prison life gave him greater 'empathy' towards/for convicts.
He felt great 'empathy' with/for/toward the poor.
(..) Meticulous nature. But... If one observes the overall slant and the pressure of the writing... There's a suggestion of acute narcissism, A complete lack of empathy, And a pronounced inclination toward ... No! Moral insanity. An answer to your previous request, Regarding, (..)2011 Sherlock Holmes: A Game of Shadows