Parkour teaches you to be sure of what you are able to do.
There are no limits, only obstacles, and any obstacle can be overcome.
Without training you will not grow wings.
Obstacles are found everywhere, and in overcoming them we nourish ourselves.
First, do it. Second, do it well. Third, do it well and fast — that means you're a professional.
Parkour belongs to the ones who live it, not the ones who want to live thanks to it.