It (Tao) is eternally without desire. So, it can be called small. All things return to it, although it does not make itself their ruler. So, it can be called great.
Once upon a time a man whose ax was missing suspected his neighbor's son. The boy walked like a thief, looked like a thief and spoke like a thief. But the man found his ax while digging in the valley, and the next time he saw his neighbor's son, the boy walked, looked and spoke like any other child.
If you want to shrink something, you must first allow it to expand. If you want to get rid of something, you must first allow it to flourish. If you want to take something, you must first allow it to be given. This is called the subtler perception of the way things are. The soft overcomes the hard. The slow overcomes the fast. Let your workings remain a mystery. Just show people the results.
The wise stand out because they see themselves as part of the Whole. They shine because they don't want to impress. They achieve great things because they don't look for recognition. Their wisdom is contained in what they are, not their opinions. They refuse to argue, so no-one argues with them.