The greatest drive for someone to attain more knowledge is their curiosity.
There was no distinction of good and bad in curiosity. However, magic was a different story altogether.
Without constraints, a Magician would venture further into the path of magic and eventually succumb to the immense knowledge, becoming merely a lifeless puppet of magic. That would already be the optimal result. More often than not, many Magicians would end up dabbling in dark magic out of curiosity and eventually becoming a degenerate slave of darkness.
There had been many of such examples in history. Blood Demon Talon, Morestern, Andrew and just recently, Wavier were all exceptional talents with a bright future that ended up on the wrong path.