Thought never dies.
Your body is just a receptacle..
You are light that lives for ever.
Which is stronger mind or heart?
It depends on the person. Some people will risk their lives to save another and not think of their own safety. Others will think of self preservation and not risk their lives.
Both are but each equally needs to be strong pertaining to the context.
Heart, unless, maybe you're a psychopath?
Clinically they each serve a purpose in the body. They are dependent of each other. Without any brain activity also known as **"Brain Death" the body needs to be put on a ventilator to keep organs alive. Without the heart providing blood to the brain, the brain dies . . . .
If you are talking more along the lines of Psychology where the heart represents the more emotional part of us and the brain, the logical cogmitive part, that is altogether different. The "Heart" is more the symbol of the our emotional center of our brain . . . The plea from the empathic region, the influx of chemicals that would make us happy or sad . . Or frightened, or mad (wait, isn't that the song from "Interjections") . . . All make up our emotional self . . . (if you are a Trekky the "Romulan Self") . . . The logical cognitive part is more cold and can even be impulsive . . . It is more interested in self preservation and does a lot of impulsive actions that would align with our well being in a more primitive instinctive way that is ingrained in all of us (The Vulcan self).
Both work together to round us out as the people we are. Too much of one over the other can make us literally "Unbalanced" or mentally unstable.
Interesting read---
Men Without Chests” is the curious title of the first chapter of C.S. Lewis’ Abolition of Man. In the book, Lewis explains that the “The Chest” is one of the “indispensable liaison officers between cerebral man and visceral man. It may even be said that it is by this middle element that man is man: For by his intellect he is mere spirit and by his appetite mere animal.” Without “Chests” we are unable to have confidence that we can grasp objective reality and objective truth.
The result of such chest-less education, as Lewis warns, is a dystopian future. “We make men without chests and expect from them virtue and enterprise,” says Lewis. “We laugh at honor and are shocked to find traitors in our midst.”
http://blog.acton.org/archives/87047-c-s-lewis-on-men-without-chests-and-what-that-means.html