The child must be kept from excitement or passion of any kind, for it is tranquillity of mind which gives a child strength, balance, self-control, self-confidence, and determination. It also strengthens the child's mentality, and it is certainly on the strength of the mentality that success in life chiefly depends. But strong mentality does not suffice for every purpose of life; besides strength, fineness is necessary. In order to develop this fineness in a child, every help must be given to sharpen its wits. Wit needs an opportunity to develop and that opportunity can be given by training a child to grasp things. A certain amount of encouragement can also be given to stimulate its wits. A child must be helped to perceive keenly what time is suitable for a certain action, what it can say or do at one time and what it should not say and do at another time. Great care should be taken in teaching good manners to a child, so that in time it may become natural to show in its manner the beauty hidden in its soul. Fine mentality can be seen in keen perception, in love of subtlety, and in the gracefulness and refinement of manner which complete mental culture.