“Young people! … You have been taught history, geography, geometry and trigonometry since childhood, but tell me honestly: do all these sciences help you in your ordinary social and spiritual life? Do you need trigonometry when declaring your love to the woman dear to your heart? And why do you need geography if you have been invited to a wedding dinner or to the funeral of your friend, or you have begun to tell a funny anecdote for the amusement of society?.. Social life is a very cunning, confusing thing, and not everyone manages to penetrate its whimsical curves and curls. I got in! I penetrated into everything... I can carefully accompany you along the slippery path of life, delicately supporting you by the arm so that you do not plop your nose on the mother-cheese earth. ..."