Una multitud de dificultades se le habrá ocurrido al lector mucho antes de haber llegado a esta parte de mi trabajo

  Long before having arrived at this part of my work, a crowd of difficulties will have occurred to the reader. Mucho antes de haber llegado a esta parte de mi trabajo, una multitud de dificultades se le habrán ocurrido al lector.     Some of them are so grave that to this day I can never reflect on them without being staggered; but, to the best of my judgment, the greater number are only apparent, and those that are…