Henry Thomas Hamblin was born at Walworth, London in 1873. Born into a poor family, he was determined to emerge from the rut which everyone was destined to fall into without being able to afford proper school and training. After a difficult start, working in various jobs and being in debt, he decided to become an optician. Despite lack of money and poor prospects, his determination won him through and he qualified. Hamblin went on to become an extremely successful businessman and founded Theodore Hamblin (now Dolland and Aitchison) frequented by royalty, the rich and the famous. Far from making him happy, his success gave him a growing sense of depression. It was as if something lay inside him that had not yet found a voice.

All through his life Hamblin had experienced visionary experiences. "It is not possible to describe such an experience," he wrote. " All care, anxiety and fear vanished, and I felt that I was cradled in Divine Love... The deep peace of the Eternal flowed through me like a river; yet at the same time it was as though I was being carried along on a stream of Divine Bliss."

He began to feel the urge to retire from business and retired to the country. But the sudden and unexpected death of his ten-year-old son made him hit rock bottom and question everything. He realised that none of his worldly success had made him happy.

Although he had been brought up in a strictly religious family, he hadn't found any of the answers he wanted in the Church. He realised that, rather than following, any creed or dogma which didn't work for him anyway, he had to look within himself. He made contact with ‘Presence’ and realised it held the key to the peace he was searching for. All the time his search was leading him nearer to discovering the way his thoughts affected his performance and outlook.

Hamblin began to write in the early 1920s. The words seemed to flow from him. He found writing clarified his thoughts. One of his first books written in this new phase of his career was Within You Is The Power, which was to sell over 200,000 copies. Other books soon followed. Hamblin believed that there is a source of abundance which, when contacted, could change a person's entire life. As long as people blamed their circumstances they were stuck in the 'victim role', but if they moved in harmony with their inner source their life could be full of abundance and harmony.

Soon after this Hamblin set up a magazine called The Science of Thought Review, based on the scientific principles of Applied Right Thinking, . Hamblin wasn't discouraged by the fact that he had no experience of editing or publishing. His experience had taught him that if the mind worked in harmony with the Divine, then everything you needed flowed towards you. Anyone with any business sense at all knew that to set up a magazine with a first print run of 10,000 copies would be a risky thing to do. But Hamblin was to take many risks and he wanted to put what he believed into practice. The only magazine of its kind in the 1920s, it soon gained a worldwide readership. Among his friends and contemporaries that were to contribute to the magazine were Joel Goldsmith, Henry Victor Morgan, Graham Ikin, Clare Cameron and Derek Neville, all of them prolific and successful writers.

Henry Thomas Hamblin worked right up to the end of his life in 1958 and left a legacy that is still continuing today, its voice as much needed today as it ever was. HT Hamblin believed that truth is essentially timeless.