The three ages of man: youth, middle age and 'my word you do look well'.

I'm struggling at the end to get out of the valley of hectoring youth, journalistic middle age, imposture, moneymaking, public relations, bad writing, mental confusion.

Our fMRI scanning reveals that middle age represents the transition between the patterns observed in youth to that found in old age. The see-saw imbalance in the two frontal lobe areas is not as significant as in older adults, but the functional changes are detectable by middle age.

There are three periods in life: youth, middle age and "how well you look

Middle age is youth without levity, and age without decay.

Man has boyhood, adolescence, youth, middle age and senescence, as stages of growth; there are also corresponding stages in the growth of wisdom in him.