" Umar, despite his strong character and impressive personality, had lost control of himself for a short while, his emotions seizing him so strongly that it brought out a heretofore unsuspected fragility, causing him to react like a child refusing the ruling of God, of reality, of life. By contrast, Abu Bakr, who was normally so sensitive, who wept so abundantly and so intensely when he read the Quran, had received the news of the Prophet’s death with deep sorrow but also with extraordinary calm and unsuspected inner strength. At that particular moment, the two men’s roles were inverted, thus showing that through his departure the Prophet offered us a final teaching: in the bright depths of spirituality, sensitivity can produce a degree of strength of being that nothing can disturb. Conversely, the strongest personality, if it forgets itself for a moment, can become vulnerable and fragile. The "

― Tariq Ramadan , In the Footsteps of the Prophet: Lessons from the Life of Muhammad