A positive response to the colleague:

I, a childless, can know more about education than you, and I know for sure that I will educate my children correctly.

Dear person, don’t believe it, but 100% of parents think the same way before the baby appears. And then a child is born and suddenly it turns out that he is a separate man with his will and desires. And this little person wanted to sneeze on the fact that his parents thought of themselves as teachers from God! Surprise, but a one-year-old child is not always obedient "he is raised" and glued out of it, like plastic, that you think there - oh, how not easy. I recommend, in order to dispel illusions, to work a couple of months in the kindergarten ;-) Look live, what are real children, not those that exist in your head. All the blessings!