From the entrance exam for Chinese civil servants (via Harper's).

Often, when a thing is just begun, it is impossible to know how it will end, much less whether society will acknowledge it. If you want success you must make every possible effort, you must keep a cool head and resist anxiety. If you work calmly and steadfastly, you will attain happiness. But if you are constantly focused on the fruits of success, the loneliness will be unbearable; you'll be unable to stay the course and will end up empty-handed. During these times we should remember that ________.