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?"

According to Buddhism, individuals are masters of their own destiny. And all living beings are believed to possess the nature of the Primordial Buddha Samantabhadra, the potential or seed of enlightenment, within them. So our future is in our own hands. What greater free will do we need?

Treat each person as you would an old friend.

If we can manage to refrain from harming others in our everyday actions and words, we can start to give more serious attention to actively doing good, and this can be a source of great joy and inner confidence. We can benefit others through our actions by being warm and generous toward them, by being charitable, and by helping those in need.

Like the lotus which thrives in mud, the potential for realization grows in the rich soil of everyday life

Tibet is not like Kuwait. Kuwait has oil.

An ethical act is one which does not harm others' experience or expectation of happiness.