The quote from Buddha speaks to the power of emotion and the need for reflection. Rain is a powerful force that can break through physical barriers, such as a poorly constructed roof. Similarly, passion is an emotional force that can break through mental barriers, such as a lack of reflection. When we take the time to reflect on our emotions, we can gain insight into our true desires and open ourselves up to the power of passion. This reflection can help us to better understand ourselves and our motivations, allowing us to make choices that are driven by our deepest desires. Without taking the time to reflect, we may find ourselves living a life that is not truly in line with our own passions and desires.