One day, a young student approached the Buddha and asked him to teach him about the nature of reality.
The Buddha led the student to a nearby river and pointed to the water rushing by.
"Do you see that water?" he asked.
"It's constantly moving, always changing. It flows downstream, never staying in one place for long. This is the nature of reality - it's constantly changing, always in motion."
The student nodded, understanding what the Buddha was trying to teach him.
Buddha continued, "Just like the water flows downstream, so too do our thoughts and emotions. They come and go, never staying in one place for long. But if we learn to let them flow, if we learn to let go of our attachments and desires, we can find peace and freedom within."
The student took the Buddha's words to heart, and he made a commitment to practice mindfulness and non-attachment in his daily life. And as he practiced, he began to experience a sense of peace and freedom that he had never known before.