Mary Barra quotes and aphorisms about time Mary Barra Mary Barra ,, It's a marathon, not a sprint. I actually feel like I come to work stronger when I've had a little ... Mary Barra Mary Barra ,, I'm a big believer of work/life balance. You need a little down time to recharge to make sure that ... Mary Barra ,, My senior leadership team is half people who have been at GM for a long period of time like me, and...