任务必须是困难的，因为只有困难才能激发高尚的心灵。
The task must be made difficult, for only the difficult inspires the noble-hearted.
The best architecture comes from a dialogue between client and architect.
一门科学的历史就是它的问题域的历史。
实现自己的命运是一个人唯一真正的责任。
The question you should be asking isn't, 'What do I want?' or 'What are my goals?' but 'What would excite me?'