The most important aspect of illusion in art is symbology. Symbology is a language of art. It does not mean something to the artist only, but it is known to all who are supposed to know its meaning. Symbology means recognized illusion. The origin of symbology is in the inspiration of the artist, for to the artist, wisdom is revealed in dreams of art, and though an inspired artist certainly gives a message in the form of art, it is not necessary that every artist should be equipped in symbology, for talent in this direction is inborn in certain artists. An artist in the mystical path may develop this, but there must already be a spark of it in the heart of the artist. To understand symbology means to understand the language of nature, for behind the recognized symbols are numberless symbols, represented by every form that exists on earth and in heaven.