 how could its place in the joy of the soul not be great and in the interest of nature not be great when it is something in the origin of nature and in the basis of composition? because laughter is the first good that appears in a boy and through it his soul is pleased and upon it his fat grows and his blood increases which is the cause of his joy and the substance of his strength.
وكيف لا يكون موقعه من سرور النفس عظيما، ومن مصلحة الطباع كبيرا، وهو شيء في أصل الطباع وفي أساس التركيب؟ لأن الضحك أول خير يظهر من الصبي، وبه تطيب نفسه، وعليه ينبت شحمه، ويكثر دمه الذي هو علة سروره، ومادة قوته.