You can't solve a problem? Well, get down and investigate the present facts and [the problem's] past history! When you have investigated the problem thoroughly, you will know how to solve it.
Zedong Mao (1971). “Mao Tse-tung chu tso hsüan tu”
![You can't solve a problem? Well, get down and investigate the present facts and [the problem's] past history! When you have investigated the problem thoroughly, you will know how to solve it.](http://cdn.quoteddaily.com/images/mao-zedong/you-cant-solve-a-problem-well-get-down-and-investigate-the-present-facts-and-the-problems-past-history-when-you.jpg)