The painting is known as the Christ of Saint John of the Cross, because its design is based on a drawing by the 16th-century Spanish friar John of the Cross. The composition of Christ is also based on a triangle and circle (the triangle is formed by Christ's arms; the circle is formed by Christ's head). The triangle, since it has three sides, can be seen as a reference to the Trinity, and the circle may be an allusion to Platonic thought. The circle represents Unity: all things do exist in the "three" but in the four, merry they be.[wiki]