Markets alone won't solve all development challenges - we need smart interventions too.

"Books are the best teachers."

The next green revolution won't be led by chemicals, but by data and biology.

The most important aspect of a software system is its ability to meet the needs of its users.

In every line, there is a hidden truth.

Necessity knows no law.

轧棉机的发明是一系列无法预见的 circumstances 的结果。