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.
Dalai LamaFrom the viewpoint of absolute truth, what we feel and experience in our ordinary daily life is all delusion. Of all the various delusions, the sense of discrimination between oneself and others is the worst form, as it creates nothing but unpleasantness for both sides. If we can realize and meditate on ultimate truth, it will cleanse our impurities of mind and thus eradicate the sense of discrimination. This will help to create true love for one another. The search for ultimate truth is, therefore, vitally important.
Dalai Lama