The following quote is from 'Heart Advice, Weekly Quotes From Pema Chodron'.
"Sentient beings are the cause of our enlightenment.
When they bother us, we learn patience;
when they're suffering, we learn loving-kindness and compassion.
No matter what reaction they evoke, we can relate to them in a way that relates to buddhahood.
Instead of buying into aversion, we become tolerant.
Instead of staying stuck in selfishness, we extend a hand to someone in distress.
Instead of letting jealousy sabotage us,
we train in rejoicement therapy."