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

The spiritual investigator must therefore find the limits set in mysticism, and these exist in the place where human powers of memory well up. Just as it is true that we would not be human without the ability to remember and the ability to love, so it is true that, our organization being the way it is, we cannot find the supersensible that lies beyond the limit set to natural science in our ordinary conscious state of mind, nor can we find it by entering deeply into our own nature in the way of a mystic.