Max Heindel,
The Rosicrucian Mysteries: An Elementary Exposition of Their Secret Teachings
“ Many cannot even believe that such a world exists, and that other people can see that which is invisible to them, yet some people are blind to the beauties of this world which we see. A man who was born blind, may say to us: I know that this world exists, I can hear, I can smell, I can taste and above all I can feel but when you speak of light and of color, they are nonexistent to me. ”
