In today's materialistic world there is a risk of people becoming slaves to money, as though they were simply cogs in a huge money-making machine. This does nothing for human dignity, freedom, and genuine well-being. Wealth should serve humanity, and not the other way around.
One has to try to develop one's inner feelings, which can be done simply by training one's mind. This is a priceless human asset and one you don't have to pay income tax on!
Learning is the first step in making positive changes within yourself. Other factors are conviction, determination, action & effort. Learning & education help develop conviction about the need to change & increase your commitment. Conviction then develops into determination. Next, strong determination leads to action: a sustained effort to implement the changes. This final factor of effort is critical.
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?"
Our planet is blessed with vast natural treasures. If we use them wisely, beginning with the elimination of militarism and war, every human being will be able to live a healthy, prosperous existence.
No matter what part of the world we come from, we are all basically the same human beings. We all seek happiness and try to avoid suffering. We have the same basic human needs and concerns. All of us human beings want freedom and the right to determine our own destiny as individuals and as peoples. That is human nature.
Internal peace is an essential first step to achieving peace in the world. How do you cultivate it? It's very simple. In the first place by realizing clearly that all mankind is one, that human beings in every country are members of one and the same family.
Buddha was speaking about reality. Reality may be one, in its deepest essence, but Buddha also stated that all propositions about reality are only contingent.