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Normally an infant learns to use his mother as a "beacon of orientation" during the first five months of life. The mother's presence is like a fixed light that gives the child the security to move out safely to explore the world and then return safely to harbor.

Louise J. Kaplan (1978). “Oneness and separateness: from infant to individual”, Simon & Schuster
Normally an infant learns to use his mother as a beacon of orientation during the first five months of life. The mother's presence is like a fixed light that gives the child the security to move out safely to explore