The pace of change demands that we unlearn as much as we learn.

There is no such thing as a moral or an immoral book. Books are well written, or badly written. That is all.

The true measure of success is leaving the industry better than we found it.

A liberdade é como o ar que respiramos; sem ela, sufocamos.

能源的未来在于传统资源与可再生替代品之间的平衡。

Even in the tropics it gets colder at night than you think. Pack warmly.