To safeguard national independence, we must strengthen national unity.

The periodic table is not just a chart; it's a map of endless possibilities.

火药让我理解了生命的短暂与永恒。

教育的目的不是使年轻人在任何一门科学上都变得完美，而是要打开和培养他们的思维，使他们在将来学习任何科学时都能胜任。

The stranger is an element of the group itself, not unlike the poor and sundry 'inner enemies'—an element whose membership within the group involves both being outside it and confronting it.

Simple things often evoke the strongest emotions.

译文：绝交时不以恶语伤人。