The Hibbert Lectures are an annual series of non-sectarian lectures on theological issues. They are sponsored by the Hibbert Trust, which was founded in 1847 by the UnitarianRobert Hibbert with a goal to uphold "the unfettered exercise of private judgement in matters of religion.". In recent years the lectures have been broadcast by the BBC.
↑...so well known as a freethinker that when he was invited the Hibbert Lectures at Oxford, the authorities of Balliol College refused the use of a room for the purpose