To educate a man in mind and not in morals is to educate a menace to society.

Capability is neutral, and training it without training judgement just makes somebody more effective at whatever they already wanted. A sharp mind with no sense of restraint is more dangerous than a dull one, not less, because it can build better arguments for whatever it intends to do. Skill amplifies; it does not point.

Worth asking what you are amplifying. If you are learning something powerful, spend a little time on who it is for and what you would refuse to use it for. And if you teach or raise anyone, remember that how you behave is the part they actually absorb.