"a mother's death also means the loss of the consistent, supportive family system that once supplied her with a secure home base, she then has to develop her self-confidence and self-esteem through alternate means. Without a mother or mother-figure to guide her, a daughter also has to piece together a female self-image of her own."

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It is surprising that people do not believe that there is imagination in science. It is a very interesting kind of imagination, unlike that of the artist. The great difficulty is in trying to imagine something that you have never seen, that is consistent in every detail with what has already been seen, and that is different from what has been thought of; furthermore, it must be definite and not a vague proposition. That is indeed difficult.

— Richard P. Feynman