Félix J. Palma said this quote

Perhaps you would have preferred it if I had not written you any letter. Perhaps you would have liked it better if I had let you meet your fate unprepared. After all, what awaits you is not all that bad and even contains moments of happiness, as you have seen. But if I wrote to you, it is because somehow I feel this is not the life you should live. Indeed, perhaps you should stay in the past, living happily with Jane and turning me into a successful writer who knows nothing about journeys through time, not real ones anyway. For me it is too late, of course, I cannot choose a different life, but you can. You can still choose between your life and the life I have just recounted to you, between going on being Bertie or becoming me. In the end, that is what time travel gives us, a second chance, the opportunity to go back and do things differently.