Every person has a life philosophy. Most often, it is laid down in childhood as a result of upbringing in the family. Rare people choose it deliberately, as happened with some of the authors of this collection, and all of them are recognized authorities and brilliant specialists in their field. On the pages of the book, a dizzying panorama of philosophical worldviews unfolds - from Eastern (Buddhism, Confucianism, Hinduism and Taoism) to Western (Aristotelianism, Epicureanism and Stoicism); from time-honored religious traditions (Judaism, Christianity and Islam) to modern concepts such as ethical culture, existentialism, effective altruism, pragmatism and secular humanism. If you doubt your current ideas about life, about the Universe and about the world in general, you have a chance to try on or even adopt a different philosophy. If you are comfortable with your frame of reference, exploring other approaches will strengthen your convictions. As Epicurus said, “we are born once, but we cannot be born twice,” so it is impossible to overestimate the role of life philosophy in how we live our only life.