The first is the beginning of the well-known ancient, anonymous homily from today's Office of Readings:
"Quid istud rei est? Hódie siléntium magnum in terra; siléntium magnum, et solitúdo deínceps; siléntium magnum, quóniam Rex dormit; terra tímuit et quiévit, quóniam Deus in carne obdormívit, et a sæculo dormiéntes excitávit. Deus in carne mórtuus est, et inférnum concitávit."
The second is from Psalm 51, a line I've always found both distressing and comforting:
זִבְחֵי אֱלֹהִים רוּחַ נִשְׁבָּרָה
לֵב-נִשְׁבָּר וְנִדְכֶּה-- אֱלֹהִים, לֹא תִבְזֶה
The third is from the essays of Francis Bacon:
"THE joys of parents are secret; and so are their griefs and fears. They cannot utter the one; nor they will not utter the other. Children sweeten labors; but they make misfortunes more bitter. They increase the cares of life; but they mitigate the remembrance of death."