Understanding black holes is understanding the fabric of the universe itself.
知识最大的敌人不是无知，而是知识的幻觉。
持续练习的小而刻意的行动可以带来幸福水平的巨大变化。
Food security is the cornerstone of national security.
The trace is often more powerful than the original.
Don't be afraid to change and grow.
The writer must be a witness to his time.