The question of which profession is the most important, everyone will respond differently. And if you ask what is the most difficult and intense, perhaps, in the first place would call heavy men's specialty, remember the firefighters, rescuers, policemen or military. Call the knowledgeable scientists and knowledge workers. But, in my opinion, there are people whose work unites all these characteristics. A matter of life — the most necessary, most difficult, most responsible, requiring continuous improvement. It's the people facing the most important task to recognize, treat, and prevent diseases, to ensure the preservation and promotion of health and working capacity of people, saving lives. And these people — the doctors.