"Compassion and tolerance are not a sign of weakness, but a sign of strength." Dalai Lama
I think that Dalai Lama ment that if you have compassion and tolerance for other people, it doesn't mean you're weak, it means you are strong enough to have those feelings and show them. If you hide those feelings, then you really are weak.
I can apply this into my life by being more compassionate towards other people, and also by showing tolerance to people who really annoy me.
I think this quote can be used to make positive changes in someone's attitude because nobody wants to be called weak. So, I think that people would really try to be "stronger" and be compassionate and tolerant.