If you don't want to know the circumstances surrounding Tuesday's entry in this slideshow, then don't read any further...
[spoiler]Tuesday's quote:
Ep #446 (1796) - Joshua - 'I MUST do this. I MUST. Forgive me. Forgive me, dear son.'
From "#0445/0446: Robservations 04/17/02: An Anguished Father"
Now Joshua knows everything--I am compelled to this terrible life, says Barnabas. My son, my son, commiserates Joshua, but Barnabas says he is only aware of his father's pain. Let me escape, pleads Barnabas--I'm an animal, with instincts to kill, no longer your son. Joshua, in agony, reaches out to Barnabas, but Barnabas orders him, "Don't touch me!" Josh, face filled with misery, takes the gun in his hand. I must do this, he says, and adds, "Forgive me, dear son." He shoots Barnabas, who clutches his chest.
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Even though the Robservations leaves out about half of the quote, because a lot of it is repeating what has already been said, it still references the quote quite well...