A thought came to me today, and went as follows: “A wise man does not proclaim himself to be wise, for if he were truly wise he would not even have to say it.”
A simple notion, yet profound to ponder. You essentially prove that you are a not wise and are instead a fool who still needs to learn. Granted even the wisest of people could still have infinite things to learn, but as long as they know that they know nothing then wisdom reigns.
In the end it is up to you, and you alone to know if you are truly wise, for your actions will prove it in the end anyways.