What is the beginning of a river or an idea?

The beginning of a river or idea is its source. Just as a river starts from a source, an idea or thought originates from a source mind. The source of a river can be a spring, a lake, or a glacier, and the source of an idea can be a person, a book, or an experience. Ideas are like rivers- they start small, from their source, and grow as they flow. As a river flows, it gathers more and more water, and as an idea develops, it gathers more and more thoughts and connections. Just like a river, an idea can take many different paths and can change and evolve as it progresses.