Andrew Cuomo is actively pursuing a political comeback, which supports the characterization that he is focused on returning to power.
Andrew Cuomo believes in nothing but his own return to power.

Andrew Cuomo resigned in disgrace – but New York’s big beast won’t stay dead - New York | The Guardian
Source: theguardian.com
Key Evidence
Andrew Cuomo began a political comeback shortly after resigning as governor.
washingtonexaminer.comwashingtonexaminer.comAndrew Cuomo begins his egotistical return to politics
He led the New York City mayoral primary race despite past controversies.
theguardian.comtheguardian.comAndrew Cuomo resigned in disgrace – but New York’s big beast won’t stay dead
Cuomo publicly expressed opposition to cancel culture and suggested a return to politics.
en.wikipedia.orgen.wikipedia.orgAndrew Cuomo
What the Evidence Shows
The statement "Andrew Cuomo believes in nothing but his own return to power" is an opinionated claim reflecting Cuomo's recent political activities. Since his resignation amid scandal, Cuomo has launched efforts to re-enter politics, including a mayoral campaign in New York City. Multiple sources confirm that he is positioning himself for a political comeback, with campaign activities and public statements indicating a strong focus on regaining political influence.
However, the phrase "believes in nothing but" is a subjective judgment about his motivations and values, which cannot be definitively proven or disproven. While his actions demonstrate a clear intent to return to power, it is not possible to categorically state that this is his sole belief or motivation without insight into his personal convictions.
Key points:
Cuomo resigned as governor amid sexual harassment allegations but quickly began efforts to return to politics.theguardian.comtheguardian.comAndrew Cuomo resigned in disgrace – but New York’s big beast won’t stay dead
He launched a mayoral campaign in New York City and framed his campaign initially around opposition to Donald Trump, though that strategy evolved.nbcnews.comnbcnews.comAndrew Cuomo framed his comeback around resisting Trump. That's changed since he...
Media coverage describes his comeback as egotistical and focused on regaining political status.washingtonexaminer.comwashingtonexaminer.comAndrew Cuomo begins his egotistical return to politics
Cuomo has publicly spoken against cancel culture and hinted at a broader political resurgence.en.wikipedia.orgen.wikipedia.orgAndrew Cuomo
In conclusion, the claim aligns with observable facts about Cuomo's recent political behavior but includes an interpretive element about his beliefs that cannot be fully verified.