Answer
The Four Noble Truths are the foundation of the Buddha's teachings. They are: 1) the truth of suffering (dukkha), 2) the truth of the cause of suffering (samudaya), 3) the truth of the cessation of suffering (nirodha), and 4) the truth of the path leading to the cessation of suffering (magga). These truths outline the nature of suffering and the way to overcome it through the practice of the Noble Eightfold Path.