Gove pursued a very radical agenda at education, and some of the changes he proposed didn't work. The most significant thing he did there - academisation - has changed the face of education for the forseable future. And he pushed it through in the face of extreme resistance from the sector without even breaking a sweat.
Since then he aced it at justice, won the EU referendum, torpedoed Johnson's tilt at the leadership, and has even had George Monbiot championing him at Defra.
He's also a weird freak of a man. But the most dangerous member of the government, by miles.