‘This body is like the earth. Our bones are like mountains. Our belly is like the sea. Our flesh is like the dust and mud. The hair that grows on us is like plants, and the skin from which this hair grows is like arable land, and the area of our body where hair does not grow is akin to saline soil. Our sadness is like darkness and our laughter like sunlight. Sleep is brother to death. Our childhood is like spring, our youth like summer. Our maturity is like the autumn, our old age like the winter of life. All of our movements are like the stars moving in the sky.’