When we speak of a calm state of mind or peace of mind, we shouldn't confuse that with an insensitive state of apathy. Having a calm or peaceful state of mind doesn't mean being spaced out or completely empty. Peace of mind or a calm state of mind is rooted in affection and compassion and is sensitive and responsive to others.
I think there is a complicated side effect to overcoming evil in that we are forever changed by it. I think after we ingest some of the cruelty of the world, it takes years off of our lives, but it also gives us wisdom and a little grace, hopefully a sense of compassion.
Certain beliefs must accompany every action: One should act without selfishness, cultivate compassion for all living things, and develop respect for others.
If indeed the qualities such as love, patience, tolerance, and forgiveness are what happiness consists in, and if it is also true that compassion, defined as concern for others, is both the source and the fruit of these qualities, then the more we are compassionate, the more we provide for our own happiness.
Compassion can be put into practice if one recognizes the fact that every human being is a member of humanity and the human family regardless of differences in religion, culture, color and creed. Deep down there is no difference.
The wounded surgeon plies the steel
That questions the distempered part;
Beneath the bleeding hands we feel
The sharp compassion of the healer's art
Resolving the enigma of the fever chart.
There is consequence of our forgetting who we are. Forgetting that we're able to create our environment, from our health to economy to war. Something can be done about everything we perceive as bad, if we so choose. If we are aware of the concept of compassion.
For the moment a lot of attention is given to economic concerns, and these problems at hand easily eclipse all others. But the remedies proposed for these problems all come out of outmoded ways of thinking... The remedy? Compassion. The logical feeling that we find in ourselves if we search deeply enough that has to be exercised toward all other living creatures.