Islam is the last Word of Allah (God) to all creation. It contains all facts and principles needed for life as well as for resurrection. It guarantees happiness for mankind in the worldly life and in the Hereafter. It suffices human beings not to seek for any other suggested reform, or any other invented teachings.
Mohammad el-Ghazali
Translated by: Amany Elmorshidy
Principally it is.. but world problems need more than abstract principles.. what is needed indeed a model of Islam adopted and practiced by Muslims and thus present their physical model of Islam to the whole World
You are right! Islam never came to be just abstrat ideas, it cannot be a religion of Allah unless it is adopted as a way of life, of ruling, of dealing in all aspects of life.