Presidents who foresaw future Presidents?

[True Federalist (진정한 연방 주의자)]

“My little man, I am making a strange wish for you.  It is that you may never be President of the United States.” - Grover Cleveland to a five year old FDR

I've heard of that, and I wonder what was going through President Cleveland's head...

In many ways the Presidency is a thankless burden, especially back in the days when a large part of the civil service was still handed out as patronage and the US was not yet an imperial power.