Thoughts are effective. Over distance. They are, like everything else, vibration, which influences other vibrations. If the thought seems to have its origin in the mind, this is wrong. The thought is consciousness. It consists of matter and soul and even the most painful thought, as earthly, solid, limited to the individual, separate and earth-heavy it may appear, is vibration. And on this level it is unlimited and spreads. And changes the consciousness of the one to whom it is directed, because to think of someone means that the vibrations overlap.
The consciousness arises from the vibrations, the thought arises from the consciousness. The consciousness is vibration. The thought is consciousness.