“Last scene of all, that ends this strange eventful history,
Is second childishness and mere oblivion,
Sans teeth, sans eyes, sans taste, sans everything.”
William Shakespeare, As You Like It, Act II Scene 7
The beginning of life (“the infant, mewling and puking in the nurse’s arms,” as Shakespeare's Jaquis describes it in that play) and the end of life have many similarities. “Second childhood” requires as much care and supervision as the first, and often more; like infants, many elderly are vulnerable.