“It isn't really important to decide when you are very young just exactly what you want to become when you grow up. It is much more important to decide on the way you want to live. If you are going to be honest with yourself and honest with your friends, if you are going to get involved in causes which are good for others, not only for yourselves, then it seems to me that that is sufficient, and maybe what you will be is only a matter of chance.”