Speak
I was sitting the other day with a thermometer in my mouth when I discovered something amazing. The most important trait of the human race is our ability to express ourselves.
I was sitting with my family and we were watching television. There was a program about a space shuttle that exploded during launch. Everyone was talking and I had the thermometer in my mouth and it was very distressing! I wanted to talk. I wanted to add my input but I couldn't open my mouth.
When I took the thermometer out it was a very liberating feeling. There was so much to say, so many comments that I had kept inside because I could not speak. But there was only one problem. The program was over. The moment to speak was gone. I missed it.
That must be how it feels to not be allowed to speak your mind. That is why it is the cruelest thing to rob that right from people. Humans are created to speak, interact and thus evolve. If you break that link then they merely become another animal gracing the face of the Earth.
Never pass on the chance to express yourself, to say what you need to say. If you learn to just shut up, eventually that becomes who you are. And then, many years later, you'd be willing to give up your whole life to be given the chance to travel back to every time you choose to shut up and to express yourself as an individual, as a human, as the highest creation on the planet.
The moment to act, the moment to speak, is always the "now". If you miss the "now", if you don't open your mouth. The moment passes, never to be regained.