
בשית מאה שנין לשתיתאה יתפתחון תרעי דחכמתא לעילא ומבועי דחכמתא לתתא
In the six-hundredth year of the sixth millennium the gates of wisdom above will open, and the wellsprings of wisdom below, and the world will be set to enter the seventh millennium.
Zohar I:117a · on Bereishis 7:11, the 600th year of Noach's lifeThe year is 5600 — 1840. From that decade the telegraph, thermodynamics, field theory, germ theory and the periodic table arrive in close order, and the rate has not slowed since. The Rebbe reads the two halves together: Chassidus opening above, the sciences below.
Likkutei Sichos vol. 15, p. 42ff · the Sicha of Parshas Noach



