The reader of this book may ask: What was the reason to put the number 50 in the title of this book? The number 50 is an auspicious number with importance in both everyday life and higher mathematics. People celebrate milestone 50th birthdays and 50th anniversaries with more pomp than they do other year markers. Half of a century is 50 and is a denomination of coins and paper money in most of the countries. When people write best-of of worst-of lists, they often try to select an even 50 items. In many ways, the number 50 feels complete. Here are more curious and interesting facts about the special character of this number.

The ultimate purpose of 50 is to promote fusion between body and soul, mind and spirit. Life is a continuing education how to reach perfect completeness of the number 50 within the framework of Heaven's circle (correlation of the number 3) and Earth's square (number 4), as this sort of self-sufficient energy is more than good enough to determine the real values of things relating to their qualities and appropriateness. On the other part, overmastering the inner feelings of all living beings is a good method of making them knowing themselves. A happy disposition of the determining number 50 attracts all worthy men to be your loyal servants and friends and, therefore, it brings you a good fortune. By virtue of this number you can know how to take advantage of all the blessings: mentally, physically and spiritually.

The crucial part of 50 is to attain greater stability in the space between two entities, Heaven and Earth, Yin and Yang, the good and evil, truth and falsehood. As long as it consists of two figures, 5 and 10, the law of the number 5 is achieving freedom through gaining the upper hand, and when becoming coupled with vibration of the number 10, which by definition is the repeated 5, the energy of its stabilization is amplified. The golden number 5 locates at the centre, occupying the place of a sovereign who keeps a situation under control (as long as it correlates with the stable position of Earth--a point in the very centre of the square),  putting right all interactions and relations between the universal elements, numbers and phenomenal events.

Thus, the balancing and refining of creation that occur within stability and ordering governed by the number 4, is made through the number 5. In the phenomenal world, this number introduces dynamic harmony between a part and a whole. The geometrical representation of the number 5 or the V-shaped figure (the repeated sign of which is the 10 or X-shaped graph, the picture of two superposed triangles, symbols of Heaven and Earth, facing each other at the crosspoint styled the Centre of the World, when two or five primal elements are in the originally balanced correlation) submits for consideration a perfect proportion known as the Golden Mean and the golden number 5. This is the central number, the main function of which is running the middle way or taking the most favourable disposition. Everything below the number 5 is associated with a shortage, but what is more than that--with overdoing. Therefore, the concept of doing no further ado is directly connected with this number. It can be considered as 'preciseness of active doing,' due to which there is nothing that left undone. In a sense, the Centre correlates with Creation and Man, the third power which takes its place between Heaven and Earth.

As for the number 50, it is masculine, introvert and relates to the starry sign Leo. The related planet is Mercury and the Tarot Card representative of the 50 number's vibration is the hierophant, magician and diviner. Through manipulating with the divining number 50, an individual will have the opportunity to learn the true meaning of change in one's life. Life with the 50 number is filled with freedom, constant change, curiosity, adventure and independence.