I don't think ethical people deal with intimidation as a method to achieve success. Undermining someone's self-esteem isn't a method to achieve success.

This quote is saying that ethical people do not use intimidating or demeaning behavior to succeed. This means that they do not make other people feel bad about themselves or put pressure on them to do something in order to gain an advantage. Instead, ethical people are respectful, kind, and supportive in order to achieve their goals. They understand that making people feel good about themselves and their efforts is more effective than making them fearful or belittling them.