Végre nem butulok tovább (I've finally stopped getting dumber).
If numbers aren't beautiful, I don't know what is.
Finally I am becoming stupider no more.
There are three signs of senility. The first sign is that a man forgets his theorems. The second sign is that he forgets to zip up. The third sign is that he forgets to zip down.
Another roof, another proof.
Mathematics is not yet ready for such problems.