We must learn and then teach our children that niceness does not equal goodness. Niceness is a decision, a strategy of social interaction; it is not a character trait. People seeking to control others almost always present the image of a nice person in the beginning.
When a child asks you something, answer him, for goodness' sake. But don't make a production of it. Children are children, but they can spot an evasion quicker than adults, and evasion simply muddles 'em.
A woman has the greatest opportunity to provide the best outcome for a baby and its potentialities. Not only by having a conscious and definite will to form the child accordingly to the highest ideal she can conceive, but first and foremost having the aspiration to work on herself.