[5][10] Hudson's theories gained increased popularity when Thomas Troward adopted them, forming the foundation for his renowned series of lectures on "Mental Science", delivered at the Queen Street Hall, in Edinburgh, in 1904,[11] and at the Doré Gallery, in London, in 1909.

[12] Troward integrated the concept of two minds into New Thought, and it subsequently caught the attention of Ernest Holmes, evolving into the fundamental insight that underlies the principles of Religious Science.

[14] At a meeting of the Medico Legal Society on December 18, 1901, he discussed the case of psychic Leonora Piper.

[15] Thomson Jay Hudson began observing hypnotism shows and noticed similarities between hypnosis subjects and the trances of Spiritualist mediums.

Hudson attended the annual convention of the National Society of Spiritualists in Rochester, New York in October, 1909.

In it, he explores the idea that there are laws governing psychic phenomena, including telepathy, clairvoyance, and other paranormal activities.