Suffering makes us capable of the full force of the Master of Delight; it makes us capable also to bear the utter play of the Master of Power. Pain is the key that opens the gates of strength; it is the high-road that leads to the city of beatitude.
Aurobindo Ghose, Sri Aurobindo, Sri Aurobindo Ashram (1994). “Essays divine and human with thoughts and aphorisms”, Lotus Press (WI)