Lyric discussion by big brother 

don't know if this helps bet here are two definitions of "Zeitgeist"

the spirit of the time; general trend of thought or feeling characteristic of a particular period of time.

The general moral, intellectual, and cultural climate of an era; Zeitgeist is German for “time-spirit.” For example, the Zeitgeist of England in the Victorian period included a belief in industrial progress, and the Zeitgeist of the 1980s in the United States was a belief in the power of money and the many ways in which to spend it.

maybe he's saying there isn't any 'spirit' in this age and maybe he's looking for someone/thing with hope or honesty i.e. a "real soul."

idk

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