There is darkness in all of us. We are not devoid of vices, and our thoughts are often bad. Such is the nature of man. But, unlike animals ruled by instincts, we are free to control our actions. From an early age, we are told about the responsibility for our every step, about the value of the lives of other people and serving for the good of society. Watching myriads of city lights pass through my window at night, I imagined how great it would be not to be afraid that tomorrow all this beauty might disappear, and the people you love will disappear, as happened with Joan. After all,...