Passing of Rabbi Moshe Cordovero (1522?-1570) of Safed, the Holy Land, known as the "Ramak", authoritative Kabbalist and author of Pardes Rimonim.
Links: The Ramak
During the Three Weeks, from 17th of Tamuz to the 9th of Av, we commemorate the conquest of Jerusalem, the destruction of the Holy Temple and the dispersion of the Jewish people.
Weddings and other joyful events are not held during this period; like mourners, we do not cut our hair, and various pleasurable activities are limited or proscribed. (The particular mourning customs vary from community to community, so consult a competent halachic authority for details.)
Citing the verse (Isaiah 1:27) "Zion shall be redeemed with mishpat [Torah] and its returnees with tzedakah," the Rebbe urged that we increase in Torah study (particularly the study of the laws of the Holy Temple) and charity during this period.
Links:
The Three Weeks
How to unmask a blessing in disguise:
Stare it in the face and say, “I know you are not just a lousy day or bad luck. I know you are a good friend—even if for the life of me I cannot determine how. I know there is only one Source of All Things, and nothing can convince me that evil descends from Above. Evil descends from the constraints of my perception. You are no more than a blessing in disguise.”
This blessing, if truly a great one, will not surrender its cover easily. You will need a composure that demonstrates you meant every word you said. You will need to hold your ground like a mountain against the sea. You will need to surprise yourself with your own resolve.
And then you can turn over a world. A world that once distorted every blessing that squeezed through its gates will now open those gates wide. And the blessings that have already entered will sigh a breath of relief as one by one they discard their scary costumes.