It is also used to describe a parental style in developmental psychology , where the parent ( s ) does not apply rules or guiding .
The motto was invented by Vincent de Gournay , and it became popular among supporters of free - trade and economic liberalism .
motto is also used to describe a parental style in developmental psychology , where the parent ( s ) does not apply rules or guiding .
The motto was invented by Vincent de Gournay , and it became popular among supporters of free - trade and economic liberalism .