When asked how he developed his mathematical abilities so rapidly, he
replied "by studying the masters, not their
pupils."

About Gauss' mathematical writing style

He is like the fox, who effaces his tracks in the
sand with his tail. "Calculus Gems" by G.F. Simmons

If you disregard the very simplest cases, there is in
all of mathematics not a single infinite series whose sum has been
rigorously determined. In other words, the most important parts of
mathematics stand without a foundation. "Calculus Gems" by G.F. Simmons