I’ve had my best years after fifty. Age is just a number—it’s your attitude that counts. 

解释：大部分蔬菜都偏寒性，而蒜却是温性的，说明了食材性质的差异。

追求知识是一生的旅程，而发现的喜悦是其最大的回报。

The dead are always listening. The dead are always watching.

The past is not a burden but a foundation.

耐心和毅力是科学发现的关键。