‘Abdu’l-Bahá made a profound comparison of the universe with the human body.
‘…this limitless universe is like the human body, all the members of which are connected and linked with one another with the greatest strength. How much the organs, the members and the parts of the body of man are intermingled and connected for mutual aid and help, and how much they influence one another! In the same way, the parts of this infinite universe have their members and elements connected with one another, and influence one another spiritually and materially. For example, the eye sees, and all the body is affected; the ear hears, and all the members of the body are moved. Of this there is no doubt; and the universe is like a living person. Moreover, the connection which exists between the members of beings must necessarily have an effect and impression, whether it be material or spiritual’.