[lemma=dream] □
[lemma=dream] □ □
[lemma=dream] □*
The dream is alive !!! " We have a signal , meaning that we know that Huygens is alive , so the dream is alive , " said an ESA director general Jean-Jacques Dordain . Dreaming is essential for our minds to sort out the day 's experience if we are deprived of REM sleep for a prolonged time we can become psychologically disturbed .