The numbers III, VI, and IX have long been considered sacred and have a special significance in various cultures around the world. In recent years, there has been a growing interest in the secret meaning behind these numbers, and their link with fractals, sacred geometry, and ancient wisdom. One of the most famous quotes attributed to Nikola Tesla is: "If you only knew the magnificence of the 3, 6 and 9, then you would have a key to the universe." Tesla, who was a genius inventor and scientist, believed that these numbers held a secret that could unlock the mysteries of the universe. The number 3 is often associated with the concept of unity and completeness. In many cultures, it is considered a sacred number, representing the trinity of mind, body, and spirit. The ancient Egyptians, for example, believed that there were three parts to the soul: the ka, ba, and akh. The hexagram, which is made up of six points, is also closely linked to the number 3. This symbol has been used for thousands of years in many different cultures, including the ancient Chinese and Jewish traditions. The hexagram is made up of two interlocking triangles, which represent the balance of opposites and the unity of male and female energy.

The number 6 is also significant in many cultures and is often associated with harmony and balance. In sacred geometry, the hexagon is a powerful symbol that represents balance and stability. The hexagon can be found in nature, in the honeycomb of bees, and in many other forms. The number 9 is often seen as the ultimate number of completion and represents the highest level of spiritual attainment. It is said to symbolize the end of a cycle and the beginning of a new one. In sacred geometry, the fractal patterns that are found in nature often contain nine levels, which represent the different stages of growth and evolution. The ancient Egyptians also believed in a trinity that was symbolized by the sun, the moon, and the star. The sun represented the father, the moon represented the mother, and the star represented the child. This trinity was seen as a symbol of the unity of all things, and the interconnectedness of the universe. 

In ancient Greek philosophy, the concept of the monad, dyad, and triad was also significant. The monad represented the unity of all things, the dyad represented the division between opposing forces, and the triad represented the synthesis of these forces into a higher unity. In conclusion, the numbers 3, 6, and 9 have a special significance in many cultures and traditions around the world. They are linked to sacred geometry, fractals, and ancient wisdom, and are seen as keys to unlocking the mysteries of the universe. Whether you believe in their mystical powers or not, there is no denying that these numbers hold a certain fascination and intrigue for many people.