„Is it possible to be a healthy vegetarian or vegan? I became vegan, let’s see, 32 years ago now. And, I run several miles every day, I go biking 40, 50 miles through the countryside, I work long hours, I feel great, it’s nice waking up with a light, trim body every day. And so many of my vegan friends, and patients, you know, are thriving, ever since their transition to a vegan diet. So, yes, and I’ve seen vegan moms go through healthy vegan pregnancies, deliver healthy vegan children, and raise them to tall, full-size, intelligent vegan adults. And, yes, certainly, all the nutrients are there in the plant kingdom to do this.“
— Michael Klaper
Interview in the documentary-film Cowspiracy by Kip Andersen and Keegan Kuhn (2014).