始终保持交易的书面记录。这将帮助你从错误和成功中学习。
最具韧性的农场是与自然合作,而非对抗自然的农场。
The search for reciprocity laws is a fundamental theme in the history of mathematics.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.