Our heart is also closely related to the people we meet; to such an extent that in industry, business, profession, science, politics, and domestic life, in every aspect of life, the people we meet are affected and influenced by the condition of our heart. If the heart is out of tune, let a man be in his office, the factory, his home, among friends, in the club, in society, whatever he says or does not say, or whatever he does, his very presence will upset the atmosphere.