In the last years I repeatedly had the opportunity to visit Australia. On these occasions I had several encounters with aboriginal art admiring the rock paintings in the Northern Territory, strolling through museum exhibits, or visiting galleries. It is certainly oversimplified to state that Aborigines express themselves either figuratively or through abstract patterns whose elements often are dots. But the pictures always have a spiritual connotation, which in its full meaning and depth remains concealed to the non-initiated. In any case, they create a meditative impression on the naive contemplator. In many cases ...