Its wings must not only be strong, but they must act in perfect harmony and coordination.

As 'Abdu'l-Baha says:--"It cannot fly with one wing alone.

If it tries to fly with the wing of religion alone it will land in the slough of superstition, and if it tries to fly with the wing of science alone it will end in the dreary bog of materialism." Perfect harmony between religion and science is the sine qua non of the higher life for humanity.

When that is achieved, and every child is trained not only in the study of the sciences, and arts, but equally in love to all mankind and in radiant acquiescence to the Will of God as revealed in the progress of evolution and the teachings of the Prophets, then and not till then, shall the Kingdom of God come and His Will be done on earth as it is in Heaven; then and not till then shall the Most Great Peace shed its blessings on the world.
"When religion," says 'Abdu'l-Baha, "shorn of its superstitions, traditions and unintelligent dogmas, shows its conformity with science, then there will be a great unifying, cleansing force in the world, which will sweep before it all wars, disagreements, discords and struggles, and then will mankind be united in the power of the love of God.".