Learning through suffering.
Πάθος μάθος broadens the meaning: "suffering is learning/learning is suffering."
Plus, it rhymes.
PS Παναγιωτη μου, λυπουμαι πολυ! I have never been able to remember the correct spelling for 'Panagiotis' but I have a solution: I will just refer to you as Dr. V___ from now on.