The Four Noble Truths are: 

1. The world is full of suffering and stress.
2. The cause of this suffering and stress is desires of physical instincts. 
3. If desire can be removed, then suffering and stress will be ended.
4. Desire can be removed by following the Eightfold Path: Right Views, Right Thoughts, Right Speech, Right Conduct, Right Livelihood, Right Effort, Right Mindfulness, Right Concentration.