The flight of birds in the atmosphere is possible thanks to the magnificent planning of nature. (The shape of birds, most suitable for the purpose of flight, is imitated in the shape of aeroplanes). Just as ships could not have sailed without the existence of water on the surface of the earth, birds would not have been able to fly if there had not been the superior arrangment of continuously maintaining air on the earth’s surface by means of the earth’s gravity. If man reflects deeply upon these phenomena, he will feel as if he is seeing God in action in His universe; he will discover the Creator in the creative system; he will see the glory of the Manufacturer in the artefacts. At the human level, take the house. The house is a shelter and a resting place for man. But how is a house built? There are many arrangements of God—thanks to which the construction of a house on earth is possible. All the elements by means of which a house is built have been placed in advance in our world. The earth has exactly the right gravitational force, thanks to which houses stay stable on the surface of the earth—otherwise they would have flown away from the earth, which is moving at a speed of one thousand miles per hour. Then there are things like the hides of animals from which man makes tents and basic crops such as cotton and flax from which fabrics can be made to decorate and protect the human body in the changing seasons. All such things are provided so that man should develop a deep feeling gratitude for his Lord and Sustainer; and for the bounties granted by Him, he should fall down on his knees before God in the full realization of His Majesty and Powers.