Which is more important: the brain or the heart? Explain your reasoning.

I would like to say the heart is more important than our brain but without our brain how do we function. We simply wouldn’t function our brain tells our heart to pump sends impulses throughout our body allowing us to move our bodies speak and talk it converts our vision so we see correctly. The brain just simply does too much to be more important than the heart but the heart is what also keeps us alive pumping oxygenated blood throughout the body so you could argue both sides.