Nescio qua....esse sui ]By some sweetness, I know not what, their place of birth leads everyone back, and does not permit them to be unmindful.
recommendo, commendo] Erasmus here is making a point on style, the latter being clasical Latin and the former being a Medievalism for "I intrust myself to..."
in mora, in causa, in cupla]The first is "for the sake of a delay"; the second is "for the sake of a cause"; the last is "for the sake of a fault."
in vitio, in crimine, in damno]Again, a stylistic point: each word carries a similar meaning, "at fault," with different connotations that Erasmus wishes to distinguish between.
Damnum in illo est. Vitium in illo est.]These both mean, "The blame is on that one."
Demeremur eum]I deserve well of him.