写作是那些没有写作就无法生活的人的职业。
Writing is a profession for those who cannot live without writing.
The only limit to our realization of tomorrow will be our doubts of today.
If you have any doubt at all about being able to carry a load in one trip， do yourself a huge favor and make two trips.
眼睛不仅仅是光学仪器；它是心灵感知外部世界的手段。