How to develop intelligence in yourself?

An intellectual is an enlightened, well-read, polite person. He knows when to speak and when to shut up. He knows the rules of good manners and ethics. To become an intellectual, you need to do a lot of work on yourself, so they are usually brought up from birth. You need to read a lot, study various sciences in order to be able to maintain a conversation. Know the fundamentals of ethics and adhere to them. Learn to control negative emotions and talk in a way that does not offend others, even if they made you very angry.