Abstraction is an eloquent but silent metaphor. Feelings evoke images, but images do not always reflect the same feelings that generated them. Geometry is inside Nature and vice-versa: a yellow circle is always a sun and a sun is always a yellow circle. A circle is in nature, architecture, design, games, drama, anger, solitude, memory and time. A circle is balance, tension, repetition, compulsion and silence. Abstraction is the core of concepts, what is left after the words are gone. A music with no words.