A Quote by Dalai Lama on buddhism, matter, suffering, and happiness

Although you can find certain differences among the Buddhist philosophical schools about how the universe came into being, the basic common question addressed is how the two fundamental principles--external matter and internal mind or consciousness--although distinct, affect one another. External causes and conditions are responsible for certain of our experiences of happiness and suffering. Yet we find that it is principally our own feelings, our thoughts and our emotions, that really determine whether we are going to suffer or be happy.