Think neither fear nor courage saves us. Unnatural vices are fathered by our heroism. Virtues are forced upon us by our impudent crimes. These tears are shaken from the wrath-bearing tree.
What is new, however, is always evil, being that which wants to conquer and overthrow the old boundary markers and the old pieties; and only what is old is good. The good men are in all ages those who dig the old thoughts, digging deep and getting them to bear fruit - the farmers of the spirit. But eventually all land is depleted, and the ploughshare of evil must come again and again.
No work or love will flourish out of guilt, fear, or hollowness of heart, just as no valid plans for the future can be made by those who have no capacity for living now.