il en est = il y en a, there are some. This expression

having an indefinite force like quelque chose, it is followed by de before the adjective. See Less. 36, v. 34«— 5. Je'ne dois pas craindre, Iam not going tofear. 6.» tant qu'il y aura, so long as there shall be.

11. c'est là ce qui m'effraie, it is that which frightens me. Note the séparation of ee and là of cela, which is of so fréquent occurrence. For this whole passage compare Note on page 10-17.