Your philosophy about life might not be something that you can express in words, but it took a lot of time and trial to get to -- so respect it. Do not back down when what you think is challenged today. Just walk away from people who don't respect your ideals. Trying to explain yourself is not going to be easy, and chances are, they are not going to listen. They are pushing their own agenda, and are not interested in learning from you. It's sad, but it's true.