But what is right and what is wrong? No one can stamp a deed as right or wrong. But there is a natural sense in man which distinguishes between right and wrong, just or unjust, a sense which is to be found even in a child. The child also sees the line and color in art or decoration; it notices when the tablecloth is not laid straight on the table, when a line that should be straight is not straight. Even a child knows when things should be harmonious, and a child normally loves harmony. There is a natural tendency in the heart of man, the same natural instinct which masons use when building a house.