Peace and the survival of life on earth as we know it are threatened by human activities which lack a commitment to humanitarian values. Destruction of nature and nature's resources result from ignorance, greed and lack of respect for the earth's living things.
By developing a sense of respect for others and a concern for their welfare, we reduce our own selfishness, which is the source of all problems, and enhance our sense of kindness, which is a natural source of goodness.
Too much of a self-centered attitude creates mistrust and suspicion in others, which can in turn lead to fear. But if you have more of an open mind, and you cultivate a sense of concern for others' well-being, then, no matter what others' attitudes are, you can keep your inner peace.