A baby who is fed when he is genuinely hungry and allowed to sleep when he is tired will be a contented baby.
一个在真正饥饿时被喂食、在疲倦时被允许睡觉的婴儿会是一个满足的婴儿。
Sorrow is hushed into peace in my heart like the evening among the silent trees。
大脑是一个复杂而动态的系统，理解它需要多学科的方法。