What is the '?'?

“Hugs are powerful. They can be the comfort you need at the end of a long frustrating day, the impetus to express your grief, a display of complete happiness. They can communicate ‘I have missed you' as much as ‘You will be missed' They can mean the difference between feeling connected or isolated, between hope and despair. Never underestimate the power of a hug or of your ability to ground another person long enough to catch their breath, and see the possibilities they may have missed. Hug often. Hug well.”