"The Church as a divine society possess an internal principle of life which is capable of assimilating the most diverse materials and imprinting her own image upon them"

In this quote, Christopher Dawson is explaining the Church as a divine society with a special and effective internal force. This force, or principle of life, has the capability to soak up and integrate a large range of aspects, no matter how varied they may be. It is through this process of assimilation that the Church is able to leave its mark and imprint its own image upon these materials. This suggests that the Church has a transformative power, able to shape and mold even the most disparate components into something that reflects its own essence. This highlights the strength and impact of the Church as a divine society.