In-depth study vs. Broad expertise

Hello,

"One should develop two opposite extremes in his studies, using the bulk of his time for learning the breadth of the words of our ancestors and reviewing his own learning, as well as setting aside a fixed time for in-depth analysis of Jewish law, with all of his strength."

(Haflaah, introduction to Tractate Ketubot)

Have a great day,
Mordechai