Determine if the sentence is true based on the text below:
Al Gore changed a lot of minds about the environment with his book written in 1992.

New question, new subject. Vice President Gore, on the environment. In your 1992 book you said, quote, "We must make the rescue of our environment the central organizing principle for civilization and there must be a wrenching transformation to save the planet." Do you still feel that way?
It's impossible to say