Dyson is the (super) rare exception of a full professor without a PhD. But then again he did unify quantum electrodynamics. https://www.ias.edu/sns/dyson https

Dyson is the (super) rare exception of a full professor without a PhD. But then again he did unify quantum electrodynamics. https://www.ias.edu/sns/dyson https://www.ias.edu/sns/dyson