I have always been a stranger in this world, a visitor, a tourist.

The past is a foreign country; they do things differently there.

I have come to believe that a great teacher is a great artist and that there are as few as there are any other great artists. Teaching might even be the greatest of the arts since the medium is the human mind and spirit.

Profit and sustainability must swim side by side, or both will sink.

已所不欲，勿施于人。

"La memoria es el único paraíso del que no podemos ser expulsados."

Sustainability isn't just a trend—it's a necessity for the survival of our planet.

To write is to read oneself.