Sometimes we put up walls not to keep people out but to see who cares enough to knock them down. dhavalvadi 5 years ago Sometimes we put up walls not to keep people out but to see who cares enough to knock them down. 1 Sometimes we put up walls not to keep people out but to see who cares enough to knock them down. Sometimes we put up walls not to keep people out but to see who cares enough to knock them down.