" Confucius said, "at 15 I set my heart on learning; at 30 I firmly took my stand; at 40 I had no delusions; at 50 I knew the mandate of heavan; at 60 my ear was attuned; at 70 I followed my heart's desire without overstepping the boundaries of what was right. "

― Ilchi Lee , I've Decided to Live 120 Years: The Ancient Secret to Longevity, Vitality, and Life Transformation