Yi-Fu Tuan has always been one of my favorite authors. It is both a pleasure, a privilege and a permanent inspiration to read his work. I suppose that only if I'd had the chance of being one of his students would I have felt more privileged. I became familiar with Tuan's work through my friend João P. Leão and also through him I learned about his, then, newly created website. While I was reading the latest of his "Dear Colleague's Letters" I wondered what should deserve more praise: his scholarship, his provocative thought, the ever surprising originality of his themes or the generosity he shows in sharing all this with the rest of us through this wonderful medium.