Never lose your child's heart.

The man of true greatness never loses his child's heart.

The gap between enthusiasm and indifference is filled with failures. The great man is he that does not lose his child's heart.

When I say that all men have the mind which cannot bear to see the suffering of others, my meaning is illustrated this way: when two men suddenly see a child about to fall into a well, they all have a feeling of alarm and distress, not to gain friendship with the child's parents, nor to seek the praise of their neighbors and friends. From such a case, we see that a man without the feeling of commiseration is not a man. The feeling of commiseration is the beginning of humanity.

A great man is one who has not lost the child's heart.