The Seven Principles of Spiritualism
The Fatherhood of God
The Brotherhood of Man
The Communion of Spirits and the Ministry of Angels
The continuous existence of the Human Soul
Personal Responsibility
Compensation and Retribution hereafter for all the good and evil deeds done on earth
Eternalprogress open to every Human Soul

The Concepts and original wording of the SevenPrinciples came through the mediumship of Emma Hardinge Britten, one of Spiritualism's greatest mediums and speakers.
Emma was inspired in 1871, by the communicating spirit of Robert Owen, to summarise the philosophy of Spiritualism in principles.
useful links:
Brief Explanation of our Seven Principles
wording from the original SNU Website
What is Spiritualism?
