The Muses were three times three as follows:
| Calliope. | Epic Poetry. |
| Clio. | History. |
| Melpomene. | Tragedy. |
| Euterpe. | Lyric Poetry. |
| Urania. | Astronomy. |
| Terpsichore. | Dancing. |
| Polyhegmnia. | Religious service. |
| Erato. | Erotic Poetry—Geometry. |
| Thalia. | Comedy. |
The world is compounded of three elements—Earth, Water and Air.
Man also is three—Body, Soul and Spirit; and the kingdom of Nature—Mineral, Animal and Vegetable.
There are three Christian Graces—Faith, Hope and Charity, and three enemies of mankind, the World, Flesh and Devil.
The number “Four” symbolises the quarters of the World—the Winds—the Gospels—the Evangelists and the four sacred Rivers.
“Five” signifies the Cross and the Five Wounds.
“Seven” has also been regarded as a mystic number, as in the Days of Creation, the days of the week, the Spirits before the Throne, the Ages in the life of man, the seven-armed candlesticks of the Hebrews; the sleepers of Ephesus; the champions of Christendom and the Wonders of the world.