That's something very important because thanks to books, people all around the world and through History has been able to change the future, regardless of if the result has been glorious or fatal. But it has change things. Why? Because words may change everything in matter of minutes, depending on how you use them.
Also it's culture what you learn from books. So you will be able to think for yourself without being cheated. It opens your mind which is very relevant to avoid some troubles which are happening right now. Some books may inspire you and guide through a stage of your life, or your whole life.
So, read a lot! And be always open minded. Don't judge before trying to love very hard. And remember that the world is very huge and there can be a lot of ways of seeing the same thing, so don't be bossy and violento just because someone doesn't agree with you. Be patient and never lose hope.