You bring to mind Rory Stewart on herself:
"Many many people even now hate Margaret Thatcher. But people knew what she stood for. And that meant that she could run a government. Everybody, civil servant minister, journalist, could look at any situation and think what would Maggie think and they would know what the answer was. She had strong opinions. And she thought, hard, about things that mattered. And she would argue about them with anyone; she loved arguing! Boris Johnson, he doesn't argue, because he doesn't actually have any opinions."