The strongest is never strong enough to be always the master, unless he transforms strength into right, and obedience into duty.
The interplay between syntax and semantics is central to the study of formal languages.
在原子和电子的世界中,经典物理学的定律不再有效,我们必须转向量子力学以获得正确的描述。
The most revolutionary tool in modern agriculture isn't a machine—it's the farmer's knowledge passed down through generations.