Beauty is often recognized before it can be explained.

The response comes first. You are stopped by something and only afterward begin assembling reasons, which are usually reconstructions rather than causes. This is why arguing someone into finding something beautiful almost never works, and why your immediate reaction is better evidence than your justification.

Trust the stopping. When something catches you, stay a moment longer before you start explaining. The explanation can wait and often diminishes the thing. The recognition is the valuable part and it does not require you to defend it.