At the core of the Buddhist teaching are the Four Noble Truths

• The Reality of Suffering (dukkha)
• The Cause of Suffering (samudaya)
• The Cessation of Suffering (nirodha)
• The Path to the Cessation of Suffering (magga, or the Eightfold Path

• http://www.buddhanet.net/4noble.htm
• http://www.ncf.carleton.ca/dharma/introduction/4-Noble-Truths.html