Magic can be defined as the application of the laws of physics to the spiritual realm. One of these laws highlights the power of concentration.
Using a magnifying glass, focus the sun’s rays into a point on a sheet of paper – they will set it on fire.
Similarly, spiritual physics teaches us that human thought has powers comparable to those of the sun’s rays.
Those who have learned to strongly concentrate their thought on a given point can succeed in producing beneficial effects in the world.
Even if we cannot see anything on the physical plane, in the etheric, astral and mental realms, their thought can ignite a fire that will burn up many impurities.