Very difficult call given I haven't seen it. How about ........
"We need to distinguish between good film-making, good science and good politics. The Day After Tomorrow is a great film which, while taking its starting point from science, ends up telling a dramatic and entertaining science-fiction story. The point is well made, however, that political decisions by governments and personal lifestyle decisions by all of us, can and do alter the sustainability of life on this planet. The climatic extremes portrayed in the film must not be taken literally as a scenario; but we would be foolish to ignore the key message that the future of the Earth is in our hands."
I think it is also important for me to know how this quote will be used, and whether it will be edited.