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Age Quote by Charles Darwin

“It is well-known that those who have charge of young infants, that it is difficult to feel sure when certain movements about their mouths are really expressive; that is when they really smile. Hence I carefully watched my own infants. One of them at the age of forty-five days, and being in a happy…” quote by Charles Darwin
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“It is well-known that those who have charge of young infants, that it is difficult to feel sure when certain movements about their mouths are really expressive; that is when they really smile. Hence I carefully watched my own infants. One of them at the age of forty-five days, and being in a happy frame of mind, smiled... I observed the same thing on the following day: but on the third day the child was not quite well and there was no trace of a smile, and this renders it probable that the previous smiles were real.”

Charles Darwin

About This Quote

Source Letter: Correspondence with a colleague, 1870

Infant smiles may be genuine expressions of happiness, but illness can suppress them, suggesting that early emotional displays are linked to health.

In simple terms: Baby smiles reflect wellbeing; illness can mask them.

Key Takeaway

Observe infant expressions for health clues.

Themes

development health emotion

Mood

observational clinical

Type

scientific practical

When to use this quote

  • pediatric care
  • early childhood observation
  • wellness monitoring

Key Concepts

biology developmental psychology parenting

Questions to Reflect On

  • How can caregivers differentiate genuine joy from reflex?
  • What other signs indicate infant health?
A Different Perspective

A smile isn’t always a reliable health indicator.

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