The Taittiriya Upanishad, written many thousands of years ago, perfectly describes the theme of this issue of the Pentagram. ‘For making knowledge rise up, both a teacher as well as a pupil are needed. And in addition, a third factor: a dialogue or conversation.’ The mighty primordial image of man, sown in matter, is awakened in this dialogue and shows, during an age-long development, ever more of his beautiful outlines. The true human being is wholly consciousness, gnosis. Michelangelo showed, in dialogue with the stone, the genesis of this human being.