Can you explain why Saburi, or patience, is so important according to Sai Baba?

According to the teachings in Chapter 19, Sai Baba describes patience, or Saburi, as a cornerstone of a virtuous life. He calls it the "manliness of men" and the "queen of the King of Good Thoughts." He explains that patience is a form of courage that helps a person overcome heavy burdens and navigate life's challenges. Its benefits are extensive: it wards off sin, distress, and poverty, averts calamities, and pushes away fear. Baba states that Faith (Nishtha) and Patience (Saburi) are like inseparable sisters, and that a human being's life, regardless of their knowledge or virtue, is "in vain" without patience.