you have to stand for something or youll fall for anything

You have to stand for something or youll fall for anything is said to be something which was first spoken by Rosa Parks as a way to show why it is important for everyone to stand up for what they believe in, as she heroically did. What the phrase means is that you should always stand up for something, of something you truly believe in, or else you may be a victim of falling for something you dont believe in at all.