“We have two ears and one mouth, so we should listen more than we say.”
“We have two ears and one mouth, therefore we should listen twice as much as we speak.”
“We have two ears and one mouth so that we can listen twice as much as we speak.”
“The reason why we have two ears and only one mouth is that we may listen the more and talk the less.”
“Having two ears and one tongue, we should listen twice as we speak.”
“You have two eyes, and two ears, but only one mouth. This is so because you are supposed to look and listen more than you talk.”