This being an international bureaucracy, it is impossible to force people off the payroll.
"That which it is impossible to force, it is impossible to hinder," the poem reads.
Probability samples are theoretical - it is generally impossible to create a sampling frame that includes every single member of a population and it is impossible to force every randomly selected person to participate.
It is impossible to force anyone to love anyone else, even if they are a parent, a child or anything, just because they "should" as their role as a parent, or because they made an earlier promise of "no matter what".
"I express all my sympathy and regret for everything that happens in a country, any country, where there are deaths on construction sites, especially those related to World Cup," Blatter said, though he added that it was impossible to force change on Qatar.
It's impossible to force anyone to do something against their will.
"It affects me every day because I feel like I could do something more to help her, even though I know I can't". Indeed, it's impossible to force people to seek help if they don't want it, but if your loved one decides to get healthy, your support can make a big difference.
It's impossible to force teens to be nice to each other, as every generation slogging their way through high school will testify to; but having to ask them not to encourage each other to kill themselves is both sad and frightening.
Even so, students understand that knowing Arabic helps them to view life in Israel through the eyes of the Arabs….We thought about making Arabic compulsory for matriculation, but concluded that if less than 10percentnt of students learn it voluntarily, it would be impossible to force it on the rest.
They have noticed it is impossible to face our forces, so they are now using young girls or young boys with explosives, who go more undetected, in areas they are told to go," Mr Bakary said.
