However in The Key to Theosophy, Blavatsky had stated that " The Society is a philanthropic and scientific body for the propagation of the idea of brotherhood on practical instead of theoretical lines.

Blavatsky in her book The Key to Theosophy ( 1889 ) wrote that: " We believe in a universal divine principle, the root of all, from which all proceeds, and within which all shall be at the end of the great cycle of being.

The Secret Doctrine, and The Key to Theosophy combined the Vedantic concept of five koshas with Western esoteric traditions ( particularly Neoplatonism ).

In The Key to Theosophy she wrote that " All men have spiritually and physically the same origin, which is the fundamental teaching of Theosophy " and that " mankind is essentially of one and the same essence.

" She also spoke out against European slave trade in Africa ( Key to Theosophy 3 ), the Caste System ( SD I: 270 ) and often laid stress on " kindness, absence of every ill feeling or selfishness, charity, goodwill to all beings, and perfect justice to others as to one's self " ( The First Message of HPB ).

* The Key to Theosophy, by HP Blavatsky

In The Key to Theosophy she presents a synthesis of Eastern ( Advaita Vedanta, Samkhya ) and Western ( Platonism, 19th century Occultism ) ideas, according to which human nature consists of seven principles.