When you first meet an enlightened person, you will not notice that he or she is enlightened since his or her look will be similar to the rest of the individuals surrounding him or her. You must spend some time with him or her. And his/her presence will gradually make you understand how terrific he/she is. An example is Buddha. When I first met him, he was just a middle-aged man with many scars on his body who used to sleep under trees because there were no rooms in the monastery where he lived. But soon after we met, I realized that something extraordinary had happened to this man. He had discovered the truth about life and love, and he was trying to share this knowledge with all of us sinners. So, yes, enlightenment changes people. Enlightenment makes people beautiful from outside but inside they are still the same as everyone else. It doesn't change people; it reveals them to themselves. What's important is what people do with this information once they know it. That's what matters. People usually say that enlightenment is like knowing the answer to all questions or having infinite wisdom, but that's not right. The truth is that nobody can really know anything except perhaps for himself or herself. We can guess at things through experience but we will never truly know anything for sure. That's why meditation is so important.