We must always question our assumptions and be willing to revise our understanding in light of new evidence.
"Writing is a way of speaking without being interrupted."
If we farm the sea as we farm the land, we must learn from past mistakes.
科学最重要的意义在于它为我们提供了一种方法,可以提出能够明确回答的问题。
Nothing can stop the man with the right mental attitude from achieving his goal; nothing on earth can help the man with the wrong mental attitude.