Which saying was used to summarize research on infants raised in deprived institutional settings?

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Research on infants raised in deprived institutional settings has shown that they often have difficulty forming attachments and developing social skills. This is because they have not had the opportunity to experience the consistent and loving care that is necessary for healthy development. The saying "It is better to have loved and lost than never to have loved at all" summarizes this research because it suggests that even though these infants may have experienced some loss, they have also had the opportunity to experience love and attachment.

Which Saying Was Used to Summarize Research on Infants Raised