Herein is the evil of ignorance, that he who is neither good nor wise is nevertheless satisfied with himself: he had no desire for that of which he feels no want.
Foolish, selfish people are always thinking of themselves and the result is always negative. Wise persons think of others, helping them as much as they can, and the result is happiness. Love and compassion are beneficial both for you and others. Through your kindness to others, your mind and heart will open to peace.
Believe nothing just because a so-called wise person said it. Believe nothing just because a belief is generally held. Believe nothing just because it is said in ancient books. Believe nothing just because it is said to be of divine origin. Believe nothing just because someone else believes it. Believe only what you yourself test and judge to be true.
When I want to think about what would be the right thing to do, the fair thing to do, the wise thing to do, I can just think of my grandmother. I can always hear her say, "Now sister, you know what's right. Just do right!"