Frank B. Gilbreth Jr.

“Dad himself used to tell a story about one time when Mother went off to fill a lecture engagement and left him in charge at home. When Mother returned, she asked him if everything had run smoothly.
Didn't have any trouble except with that one over there,' he replied. 'But a spanking brought him into line.'
Mother could handle any crisis without losing her composure.
That's not one of ours, dear,' she said. 'He belongs next door.”
― Frank B. Gilbreth Jr., Cheaper by the Dozen

“Dad took moving pictures of us children washing dishes, so that he could figure out how we could reduce our motions and thus hurry through the task. Irregular jobs, such as painting the back porch or removing a stump from the front lawn, were awarded on a low-bid basis. Each child who wanted extra pocket money submitted a sealed bid saying what he would do the job for. The lowest bidder got the contract.”
― Frank B. Gilbreth Jr., Cheaper by the Dozen