The first erroneous assumption is that quality means goodness, or luxury, or shininess, or weight.

You need patience, discipline, and agility to take losses and adversity without going crazy.

Sustainability is not an option; it's a necessity for the survival of our oceans and our planet.

Tennis is a mental game. Everyone is fit, everyone hits great forehands and backhands – it’s the upstairs that counts.

I don't have to be a role model for anyone.

最好的交易者是那些能够从错误中学习的人。