Directions: Answer the given question based on the following passage:
There is no instance in history of a more marvellous and sudden up-surging of strength in a nation than modern Japan. There were several theories to account for the uprising, but the intellectual Japanese told us as to what were the fountains of that mighty awakening, the sources of that inexhaustible strength. They were drawn from religion. It was the Vedantic teachings of Oyomei and the recovery of Shintoism with its worship of the national Shakti of Japan in the image and person of the Mikado that enabled the little island empire to wield the stupendous weapons of Western knowledge and science with the same ease with which Arjun wielded the Gandiv.
What is the central idea of the passage?