Nationality started as something natural, but we should not be restrained by the old politics that make up these clear lines. It should have its own way of evolving. In some places, it will evolve slower and in others, faster. It's like the mountains, the ocean and the rivers. It has its own geological forms. Societies cannot be flat. But during change, human rights, human dignity and free speech have to be protected. Otherwise, we'll be going backward.

I deal with students every day - from China, Germany, the United States, Hong Kong and Taiwan. And I've noticed that the Chinese students are the least trained in having a sense of aesthetics. They lack any ability to sense what is beautiful or what is proper. They can be learned and skillful, but they lack the ability to make their own free judgment. It is really sad to see young adults of 20, 25 years who were never taught to make their own decisions. People who can't do that don't get a sense of responsibility. And if you lack a sense of responsibility, you push the blame onto the system.

I think to deal with the situation like human crisis, 65 million people being displaced, lost their home, and with such human tragedy, has to make every level of society to be conscious and to be alert about the situation. So, the politicians and the people who make decisions very often is the one we think can make some difference. But of course they will not make a difference if the citizens or the individuals not push it or not to speak out, to possess a very strong voice about, this is not acceptable.

Now many enterprises are made by individuals, so the attitude has started to change.

I believe [the architecture firm] Herzog and de Meuron and our collaboration made the product the best it could be.

Somehow, we [ Tan Dun and director Chen Kaige] were all privileged at the time; we could be outside of China. But at the moment, we had no sense of what the future was going to be like.

Liberty is about the right to question everything.