"Without the spirit the world of mankind is lifeless..."

Flowers at the Mansion of Mazra'ih

"Material civilization is like a lamp-glass. Divine civilization is the lamp itself and the glass without the light is dark. Material civilization is like the body. No matter how infinitely graceful, elegant and beautiful it may be, it is dead. Divine civilization is like the spirit, and the body gets its life from the spirit, otherwise it becomes a corpse. It has thus been made evident that the world of mankind is in need of the breaths of the Holy Spirit. Without the spirit the world of mankind is lifeless, and without this light the world of mankind is in utter darkness."

‘Abdu’l-Bahá, Selections from the Writings
www.bahai.org/r/916728220