How beautiful the weather is today, the sky is clear, the sun shines, and the heart of man is made glad thereby! Such bright and beautiful weather gives new life and strength to man, and if he has been sick, he feels once more in his heart the joyous hope of health renewed. All these gifts of nature concern the physical side of man, for it is only his body that can receive material benefits.

‘Abdu’l-Bahá, Paris Talks, p. 61