Man's survival, from the time of Adam and Eve until the invention of agriculture, must have been precarious because of his inability to ensure his food supply.

The stream of thought is the stream of life solving its problems.

Singing is not about perfection, but about emotion and connection.

解读：一次性快乐稍纵即逝，如短暂刺激；可重复的快乐源于内心充实、自我成长，更值得投入精力，引导追求深度、持久快乐。

孩子们值得拥有挑战他们的书，而不仅仅是娱乐。

Science thrives when curiosity meets rigorous methodology.