He had two lives: an open one, seen and known by all who needed to know it, full of conventional truth and conventional falsehood, exactly like the lives of his friends and acquaintances; and another life that went on in secret. And through some strange, perhaps accidental, combination of circumstances, everything that was of interest and importance to him, everything that was essential to him, everything about which he felt sincerely and did not deceive himself, everything that constituted the core of his life, was going on concealed from others; while all that was false, the shell in which he hid to cover the truth—his work at the bank, for instance, his discussions at the club, his references to the "inferior race," his appearances at anniversary celebrations with his wife—all that went on in the open. Judging others by himself, he did not believe what he saw, and always fancied that every man led his real, most interesting life under cover of secrecy as under cover of night. The personal life of every individual is based on secrecy, and perhaps it is partly for that reason that civilized man is so nervously anxious that personal privacy should be respected.

~ Anton Chekhov, from The Lady with the Dog