As far as ignorance is concerned, not just Buddhism, every religion recognizes it as the source of suffering.
Dalai LamaAnger may bring extra energy, but it eclipses the best part of our brain: its rationality. The energy of anger is almost always unreliable.
Dalai LamaI call the light and high aspects of my being spirit and the dark and heavy aspects soul. Soul is at home in the deep, shaded valleys. Heavy torpid flowers saturated with black grow there. The rivers flow like warm syrup. They empty into huge oceans of soul. Spirit is a land of high white peaks and glittering jewel-like lakes and flowers. Life is sparse and sounds travel great distances. There is soul music, soul food, and soul love... People need to climb the mountain not simple because it is there But because the soulful divinity needs to be mated with the spirit.
Dalai Lama