发明是需求之母。

The most difficult thing in architecture is to be simple.

学习正确答案将帮助孩子完成学业，但学会如何学习是为一生做准备。

悲伤就是知识

The energy transition is not a threat but an opportunity for those who are prepared to lead.

人性本善，但罪恶的社会环境使人变坏了。