https://en.wikipedia.org/wiki/Cynicism_(philosophy)
Cynicism (Ancient Greek: κυνισμός) is a school of thought of ancient Greek philosophy as practiced by the Cynics (Ancient Greek: Κυνικοί; Latin: Cynici). For the Cynics, the purpose of life is to live in virtue, in agreement with nature. As reasoning creatures, people can gain happiness by rigorous training and by living in a way which is natural for themselves, rejecting all conventional desires for wealth, power, and fame, and even flouting conventions openly and derisively in public. Instead, they were to lead a simple life free from all possessions.
How my heart sings 