The following snippet is taken from The Orthodox Way written by Bishop Kallistos Ware. I post this information in order to facilitate understanding between Trinitarians and non-Trinitarians. The language found in Trinitarian creeds is very difficult to fathom at first blush,m but it is my hope that the comments posted here will disambiguate the Trinity doctrine for non-Trinitarians:
"We are not to think of him [Jesus Christ] as 'half-in-half.' Jesus Christ is not fifty per cent [sic] God and fifty per cent man, but one hundred per cent God and one hundred per cent man. In the epigrammatic phrase of St Leo the Great, he is TOTUS IN SUIS, TOTUS IN NOSTRIS, 'complete in what is his own, complete in what is ours'" (page 73).