Everything we know about our world is based on man-made study. Every generation studies our world and conveys its knowledge to the following generation. Through it, each generation comprehends the sort of framework in which he should live, and what his position is in relation to other generations. In each era, mankind uses the world surrounding him.
The same process takes place in spiritualism. Every generation of sages studies and discovers the spiritual worlds. Just as in scientific research, they pass along the knowledge they have attained to future generations.
In this world we have a general sense, called the desire to receive, with five receptors, which are our five senses. When a person undergoes a correction, he attains the sixth sense, known as the spiritual sense. This sense enables him to feel the spiritual reality. It is not in the same category as the other five senses whatsoever.