This week on the MacroVoices podcast, host Erik Townsend interviewed Neil Howe, co-author of The Fourth Turning, an investing tract that's found renewed relevance thanks to White House Chief Strategist Steve Bannon, who's cited it as an inspiration for his (and by extension, President Donald Trump's) worldview.

According to the New York Times, which published a story earlier this year explaining the theories encapsulated in the book, the Fourth Turning was "written by two amateur historians, making the case that world events unfold in predictable cycles of roughly 80 years each, and that they can be divided into four chapters, or turnings: growth, maturation, entropy and destruction. Western societies have experienced the same patterns for centuries, the book argues, and they are as natural and necessary as spring, summer, fall and winter."