Misunderstanding may arise by confusing the Buddhist and scientific definitions of death. Within the scientific system you spoke quite validly of the death of the brain and the death of heart. Different parts of the body can die separately. However, in the Buddhist system, the word death is not used in that way. You'd never speak of the death of a particular part of the body, but rather of the death of an entire person. When people say that a certain person died, we don't ask, "Well, which part died?"

An open heart is an open mind.

We believe in self creation. That's why Buddhists believe in the Four Noble Truths.

A mind wishing to benefit other people and other sentient beings is the very basis of peace and happiness.

The antidote to hatred in the heart, the source of violence, is tolerance. Tolerance is an important virtue of bodhisattvas [enlightened heroes and heroines] - it enables you to refrain from reacting angrily to the harm inflicted on you by others. You could call this practice "inner disarmament," in that a well-developed tolerance makes you free from the compulsion to counterattack. For the same reason, we also call tolerance the "best armor," since it protects you from being conquered by hatred itself.

Although under particular circumstances, the violence method - any method - can be justified, nevertheless once you commit violence, then counterviolence will be returned.

The affection is mainly biological factor. Then further sort of strengthening, that religion helps.