"The mind's own basic nature is ultimately neutral. It can be influenced by negative as well as by positive emotions. Take, for instance, those who have a short tempter. When I was young I was quite short-tempered. However, the mood never lasted for twenty-four hours. If negative emotions are in the very nature of our mind, then as long as the mind is functioning the anger must remain. That, however is not the case. Similarly, positive emotions are also not in the nature of the mind. The mind is something neutral, reflecting all sorts of different experiences or phenomena."
~His Holiness the Dalai Lama