You have to have hope. It's irresponsible to give false hope, which I think a lot of playwrights are guilty of. But I also think it's irresponsible to simply be a nihilist, which quite a lot of playwrights, especially playwrights younger than me, have become guilty of.
When I was younger, I did not have the strength to jump well enough, but over the years I have gained that, worked on it. But the sensibility you simply have to have.