[T]raining a child is so great an art that with every desire and effort to obtain proficiency in it, mistakes and lapses are almost unavoidable. The great thing is not to be unduly discouraged by mistakes and lapses, not to be afraid to acknowledge that we were less wise than the occasion demanded. Another time we shall do better. Mercifully, it is so in life.
Mrs Clement Parsons The Parents' Review Vol 12, 1901, p609 -