Book excerpt: The Science of Kabbalah (Pticha) is the first in a series of texts that Rav Michael Laitman, Kabbalist and scientist, designed to introduce readers to the special language and terminology of the Kabbalah. Here, Rav Laitman reveals authentic Kabbalah in a manner that is both rational and mature.Readers are gradually led to an understanding of the logical design of the Universe and the life whose home it is. The Science of Kabbalah, a revolutionary work that is unmatched in its clarity, depth, and appeal to the intellect, will enable readers to approach the more technical works of Baal HaSulam (Rabbi Yehuda Ashlag), such as Talmud Eser Sefirot and Zohar. Although scientists and philosophers will delight in its illumination, laymen will also enjoy the satisfying answers to the riddles of life that only authentic Kabbalah provides. Now, travel through the pages and prepare for an astonishing journey into the 'Upper Worlds'Kabbalah Books aims to follow what Baal HaSulam directed, that redeeming the world from its plights depends solely on disseminating the correction method, as he wrote "We are in a generation that is standing at the very threshold of redemption, if we will only know how to spread the wisdom of the hidden in the masses."We do know one way of doing this through sharing our Kabbalah books with the world. We aim to pursue every avenue to spread this wisdom as widely as possible. Hard copies of books make the wisdom of Kabbalah available to even more people. And if you desire, you can help with that by giving the wisdom to others through the books.