In the world sloth calls itself tolerance; but in hell it is called despair. It is the accomplice of every other sin and their worst punishment. It is the sin that believes in nothing, cares for nothing, seeks to know nothing, interferes with nothing, enjoys nothing, loves nothing, hates nothing, finds purpose in nothing, lives for nothing and remains alive only because there is nothing it would die for.
–Dorothy Sayers
Sloth is most often evidenced in busyness … in frantic running around, trying to be everything to everyone, and then having no time to listen or pray, no time to become the person who is doing these things.
–Eugene Peterson
[W]e are revealed in His light as those who lead a false existence, remaining in exile and therefore in misery as though the true God had come to us in vain, as though He had not taken us up with Him, as though we were not already at home in and with Him, sharing His royal freedom. This is what gives to the human situation the determination and character of human misery. It is the evil fruit of the sloth of man. It is the unavoidable fate of the sloth of man. Remaining behind instead of going up with Him, he is necessarily the one who is left behind in misery. He prefers his own life below to the divine life above. He chooses to persist in it. He must have it as he himself wills to have it. He must be the one he himself wills to be. He is thus the man who remains below where he does not belong, and is not at home.
–Karl Barth
7 Deadly Sins 