The next aspect of art is suggestive art. This can be divided into two kinds: first an art which directly suggests a certain idea, so that as soon as we see the picture we can see what it says, what it explains, what it represents; and the other kind which is expressed in symbols, an art which through a certain symbology expresses a great wisdom. This wisdom is covered; and the more one looks at the picture and the more one studies it, the more it reveals the idea, the wisdom, the thought that is hidden in it. Such art is a revelation.