Five – constantly changing – categories of living beings (which have been called “nervous system” before) are present on the square. Through their changes (shape – colour – movement – structure – size – clearness – dynamics – etc.) they characterize our senses, our organs and the basic substances:
earth, water, fire, air, space, time, direction in space, and soul.

On one hand, the living beings elucidate our five senses of perception to us:
our sense of smell, our sense of taste, our sense of sight, our sense of touch, and our sense of hearing, in conspicuously using these senses – according to the nature of the represented being and according to its state of evolution.

On the other hand, the living beings characterize our five organs of action:
our feet and hands, our organs of procreation, our tongue (our organ of taking food and of speech), and our organs of excretion,
in conspicuously using these organs – according to the nature of the represented being and according to its state of evolution.

Moreover, the living beings remind us of the five basic substances:
the earth-element, the water-element, the fire-element, the air-element and the space-element,
since these basic substances are expressing themselves in the senses/inclinations of the beings;
because:

– the earth we can smell, taste, see, touch and hear;

– the water we can taste, see, feel and hear;

– the fire we can see, feel and hear;

– the air we can feel and hear;

– the space we can hear.

The fifth basic substance “space” is also brought into our awareness, with the proceeding of the whole performance, by the music, by the spoken word – by that which “is heard”.

Of the sixth basic substance “time” we are reminded by the change of the living beings.

The seventh basic substance “direction in space” is elucidated by the movements of the living beings.

The eighth basic substace “soul” we infer from the permanence of the respective primary living being in spite of the permutation of the modes of appearance of the living being.