Achebe on "The Leadership Crisis in Nigerian Politics"

In Chinua Achebe writes:

There is a story about Bernard Shaw arriving at the New York harbour, and being immediately surrounded by journalists as he stepped off the ship. But before even the quickest of them could open his mouth, the celebrated playwright stopped them cold as he fired off: ‘Don’t ask me what you should do to be saved; the last time I was here I told you and you haven’t done it!’ I feel very much the same way about what is happening in Nigeria. We know what we should do, yet we refuse to do it. Instead we have been “blowing grammar” all over the country as if our problem stems from insufficient argument. So I have turned down or simply ignored all previous invitations to join the talking.