An excerpt from Swami Vivekananda’s Raja Yoga
The Yogi teaches that the mind itself has a higher state of existence, beyond reason, a superconscious state, and when the mind gets to that higher state, then this knowledge, beyond reasoning, comes to man. Metaphysical and transcendental knowledge comes to that man.
This state of going beyond reason, transcending ordinary human nature, may sometimes come by chance to a man who does not understand its science; he, as it were, stumbles upon it. When he stumbles upon it, he generally interprets it as coming from outside. So this explains why an inspiration, or transcendental knowledge, may be the same in different countries, but in a one country it will seem to come through an angel, and in another through a Deva, and in a third through God. What does it mean? It means that the mind brought the knowledge by its own nature, and that the finding of the knowledge was interpreted according to the belief and education of the person through whom it came. The real fact is that these various men, as it were, stumbled upon this superconscious state. The Yogi says there is a great danger in stumbling upon this state. In a good many cases there is the danger of the brain being deranged, and, as a rule, you will find that all those men, however great they were, who had stumbled upon this superconscious state without understanding it, groped in the dark, and generally had, along with their knowledge some quaint superstition.
Whenever a prophet got into the superconscious state by heightening his emotional nature, he brought away from it not only some truths, but some fanaticism also, some superstition which injured the world as much as the greatness of the teaching helped. To get any reason out of the mass of incongruity we call human life, we have to transcend our reason, but we must do it scientifically, slowly, by regular practice, and we must cast off all superstition. We must take up the study of the superconscious state just as any other science. On reason we must have to lay our foundation, we must follow reason as far as it leads, and when reason fails reason itself will show us the way to the highest plane.