Some Cayce quotes to get you started:
Each soul in entering the material experience does so for those purposes of advancement towards that awareness of being fully conscious of the oneness with the Creative Forces. (2632-1)
Know thyself, then, to be as a corpuscle, as a facet, as a characteristic, as a love, in the body of God. (2533-7)
In the first cause, or principle, all is perfect. In the creation of soul, we find the portion may become a living soul and equal with the Creator. To reach that position, when separated, must pass through all stages of development, that it may be one with the Creator. (900-10)
The first [lecture] lesson for SIX MONTHS should be ONE - One - One - ONE; Oneness of God, oneness of man's relation, oneness of force, oneness of time, oneness of purpose, ONENESS in every effort - Oneness - Oneness! (900-429)
WHERE IS thine OWN will? One with HIS, or to the glorifying of thine own desires - thine own selfish interests? (262-42)
(Q) What should be the approach to one who has become interested in cults, isms, etc.?
(A) In that same manner; for what is the difference? As He has given, it will ever be found that Truth - whether in this or that schism or ism or cult - is of the One source. Are there not trees of oak, of ash, of pine? There are the needs of these for meeting this or that experience. Hast thou chosen any one of these to be the ALL in thine usages in thine own life? Then, all will fill their place. Find not fault with ANY, but rather show forth as to just how good a pine, or ash, or oak, or VINE, thou art! (254-87)
… COORDINATE the teachings, the philosophies of the east and the west, the oriental and the occidental, the new truths and the old. For, as the sage of old gave, "There is nothing new under the sun.” … Correlate not the differences, but where all religions meet - THERE IS ONE GOD! "Know, O Israel, the Lord thy God is ONE!" (991-1)
For, as has been given, it is not all of life to live, nor yet all of death to die. For life and death are one, and only those who will consider the experience as one may come to understand or comprehend what peace indeed means. (1977-1)
Know in self that the greater part is ever within self when trouble arises between self and daughter, between self and neighbor, between self and husband. For that we think, that we give voice to in condemnation of others, we will find within our own selves. For the Lord thy God is one. And where ye condemn, so are you condemned. As ye forgive, so are ye forgiven. (3457-1)
Hence, in the fruits of that – as is given oft, as the fruits of the spirit – does man become aware of the infinite penetrating, or inter-penetrating the activities of all forces of matter, or that which is a manifestation of the realm of the infinite into the finite – and the finite becomes conscious of same. (262-52)
... ye are part and parcel of a universal consciousness or God – and thus of all that is within the universal consciousness, or the universal awareness; as the stars, the planets, the sun, the moon. Do ye rule them or they rule thee? They were made for thy own use, as an individual – yea, that is the part, the thought thy Maker, thy Father-God thinks of thee. For ye are as a corpuscle in the body of God; thus a co-creator with Him, in what ye think, in what ye do. And ye change each soul ye contact, literally or mentally – insofar as ye, as an individual entity, are a witness for or against the Lord, thy God . . . no soul may come in contact with the entity without being changed, either in body, in mind or in purpose. And purpose is, of course, of the soul. (2794-3)
There is the physical body, there is the mental body, there is the spiritual body. They are one. They each have their attributes. They each have their weaknesses. They each have their associations. Yet they must be all coordinated. (1579-1)