Daria RYCHKOVA took an “illustration risk” for the 21 GRAD customer magazine from Vaillant, because issue number 12 is dealing with ‘courage’: We admire people who jump in at the deep end, who fight for their ideals and who take a risk. People who are courageous. Where do their power and self-confidence come from? Three examples to approach a virtue. Find out more about this exciting main topic on 21-grad.de.