In context, Marlow's statement in sentence 3 ("I saw the time … unsound method") can best be interpreted to mean he believes that Kurtz's methods will be judged fairly by the company he fears that he will be left to answer for Kurtz's brutal behavior he suspects that Kurtz has come to regret the methods he used in the jungle he thinks that the natives are now fearful of Kurtz, the man they once worshipped he worries that the manager will condemn him for not rescuing Kurtz in time