You don't realize what fine fighting material there is in age. ... You show me any one who's lived to over seventy and you show me a fighter - some one who's got the will to live.
The point is that one's got an instinct to live. One doesn't live because one's reason assents to living. People who, as we say, 'would be better dead' don't want to die! People who apparently have everything to live for just let themselves fade out of life because they haven't got the energy to fight.