First printing of the Zohar, the fundamental work of the Kabbalah (Jewish esoteric and mystical teachings), authored by the Talmudic sage, Rabbi Shimon Bar Yochai.
Links: The Kabbalah
Av 20 is the yahrtzeit (anniversary of the passing) of the Lubavitcher Rebbe's father, Rabbi Levi Yitzchak Schneerson (1878-1944), in Alma Ata, Kazakhstan. Rabbi Levi Yitzchak was Chief Rabbi of Yekaterinoslav (currently Dnepropetrovsk), and was arrested and exiled to Kazakhstan by the Stalinist regime as a result of his work to preserve Jewish life in the Soviet Union.
Links:
A Brief Biography
Rebbetzin Chana Scneerson's biography, which includes her account of her husband's heroism, arrest and passing.
The world is a place of constant change and unrest.
Each point in time is distinct from the point before and the point after.
Each point in space is its own world, with its own conditions and state of being.
It is a world of fragments, a perpetual rush of traffic and noise.
Look at your own life: You do so many different things, one after the other without any apparent connection between them.
Inner peace is when every part of you and every facet of your day is moving in the same direction.
When you serve one G-d, have one purpose, and all you do orbits around the meaning you have found in life.
When you have purpose, you have peace.