I'll pick brain over beauty. I mean, brains have always been the solution to world's problems. Brain is the key, the central unit for every human activities. Without the brains that have been put into good use, man would not have stood a chance. Even when we start to age, our brain cells still remain and function. Beauty is awesome. Something that pleases the eyes and desires. It components us but beauty fades away quicker than we realize. It really doesn't solve anything. When all beauty withers, what do we have left ? All the things we've learnt, our experiences, our memories, impact etc. After all beauty can be bought these days though surgery, treatments and what have you. These solutions came as a result of knowledge from research and technology all from usefulness of the human brain.