Science fiction is any idea that occurs in the head and doesn't exist yet, but soon will, and will change everything for everybody, and nothing will ever be the same again. As soon as you have an idea that changes some small part of the world you are writing science fiction. It is always the art of the possible, never the impossible.

It is absolutely impossible to transcend the laws of nature. What can change in historically different circumstances is only the form in which these laws expose themselves.

No one can persuade another to change. Each of us guards a gate of change that can only be opened from the inside. We cannot open the gate of another, either by argument or emotional appeal.

He who is fixed to a star does not change his mind.

Countries such as the U.S. and Britain have taken it upon themselves to decide for us in the developing world, even to interfere in our domestic affairs and to bring about what they call regime change.