OF THE MANNERS OF MIDDLE-AGED MEN.
The manners of middle-aged men, are between those of youth and old men. And therefore they neither dare, nor fear too much; but both as is fit. They neither believe all, nor reject all; but judge. They seek not only what is honourable, nor only what is profitable; but both. They are neither covetous, nor prodigal; but in the mean. They are neither easily angry, nor yet stupid; but between both. They are valiant and withal temperate.
And in general, whatsoever is divided in youth and old men, is compounded in middle-age. And whereof the excess or defect is in youth or old men, the mediocrity is in those of middle-age.
Middle-age for the body, I call the time from thirty to five and thirty years: for the mind, the nine-and-fortieth, or thereabouts.
==========
The English Works of Thomas Hobbes of Malmesbury, Volume 06 (of 11) · The Wunder Library — complete classics, free to read, with narration.