As far as ignorance is concerned, not just Buddhism, every religion recognizes it as the source of suffering.
Dalai LamaWhen you are discontent, you always want more, more, more. Your desire can never be satisfied. But when you practice contentment, you can say to yourself, 'Oh yes - I already have everything that I really need.'
Dalai LamaIf there is love, there is hope that one may have real families, real brotherhood, real equanimity, real peace. If the love within your mind is lost and you see other beings as enemies, then no matter how much knowledge or education or material comfort you have, only suffering and confusion will ensue.
Dalai LamaThose who suffer from an exaggerated sense of their own ability and accomplishment are continually subject to frustration, disappointment, and rage when reality intrudes and the world doesn't validate their idealized view of themselves.
Dalai LamaEvery day, think as you wake up, today I am fortunate to be alive, I have a precious human life, I am not going to waste it. I am going to use all my energies to develop myself, to expand my heart out to others; to achieve enlightenment for the benefit of all beings. I am going to have kind thoughts towards others, I am not going to get angry or think badly about others. I am going to benefit others as much as I can.
Dalai Lama