What should Canada's priorities be in this golden age of astronomy and astrophysics?

The NRC-NSERC Long Range Plan is the fruit of extensive consultation in 1998 and 1999 with all facets of our Canadian astronomical community. The recommendations of the Long Range Planning Panel (LRPP) represent the consensus of our entire astronomical community for its priorities in astronomy in the coming 10-15 years. We present a unified vision of astronomy and astrophysics that emphasizes the need to construct a complementary set of ground and space-based observatories. The very complexity of the origin and evolution of structures in the universe implies that no single telescope can be the complete tool with which to address these problems; a carefully designed, interwoven and complementary set of observatories is required. This vision includes participation in newly emergent world observatories, as well as international and national observatories; growth in the research capabilities of our leading institutes and universities; extensive investment in the training and support