Question: There are many examples in physics that verify the fact that our nature is dual. It is the division of matter into material and energy particles, or in other words, into fermions and bosons.
All the objects and phenomena in our world are either binary or dual, and two forces are observed in every phenomenon.
All of the systems that physicists study are either absolutely balanced or aspire for balance. The two forces in the system must complement and balance each other in order to reach a balanced state.
Answer: According to the wisdom of Kabbalah, the world is also basically divided into two opposite forces—the force that bestows and the force that receives—and everything that happens is only the expression of the different variations of the relationship between them.
From the Kabbalah Lesson in Russian 12/25/16