Help Tale of Two Cities

[Jamesmazingness]

"All things have worked together as they have fallen out. It was the always-vain endeavour to discharge my poor mother's trust that first brought my fatal presence near you. Good could never come of such evil, a happier end was not in nature to so unhappy a beginning. Be comforted, and forgive me. Heaven bless you!"

If anyone can help me understand what this means It'd be greatly appreciated. Its in Chapter 11: Dusk in Book 3 of a Tale of Two Cities. In my copy its page 419.

[D))N]

He was just saying that someones fate can not be changed; that things have to happen. That he always knew this would happen and he is basically being negative and pessimistic about the whole thing.