Who are you?

The very first e-mail I recieved from a student coordinator at the school I'm attending in DC gave me a very good feeling. I will admit it straight away, I'm one of those who just love proverbs and other words of wisdom. This particular e-mail ended with a Chinese proverb that left me with a question and I am asking the same to you. Who am I of these two? Who are you?

"When the wind changes directions, there are those who build walls and those who build windmills."