V. Can a method of gaining insight into spheres beyond the sense-perceptible world be given a scientific basis?

On the other side there is this. How should one enter into that world where one feels one is losing oneself, into the subtle activity and essence which otherwise exists in sleep, in dreams? It is a world where we are no longer standing robustly in outside nature, no longer have the robust feeling of existence which we create for ourselves in the outside world perceived through the senses. You think you are losing your equilibrium, the firm ground under your feet. You no longer have the feeling that you had in relation to the world you perceived through the senses. In some way, if one is not prepared to move on, one gets into a state of weightlessness. One feels one is losing the ground under one’s feet.