Anthropic principle can help us to understand many properties of our world.
However, for a long time this principle seemed too metaphysical and many
scientists were ashamed to use it in their research. I describe here a
justification of the weak anthropic principle in the context of inflationary
cosmology and suggest a possible way to justify the strong anthropic principle
using the concept of the multiverse.Comment: 35 pages, 2 figs., to appear in "Science and Ultimate Reality: From
Quantum to Cosmos", honoring John Wheeler's 90th birthday. J. D. Barrow,
P.C.W. Davies, & C.L. Harper eds. Cambridge University Press (2003
