A thirst for knowledge is difficult to quench, each incursion into virgin territory fans the flame rather than slakes the thirst. Each ridge climbed displays an enticing vista of further gullies to traverse, revealing more distant ridges which are gained by placing one foot in front of the other.
As one ages, and none more so than when one retires, a mantra is confronted time and again: use it or lose it. Frequently, this slender logic is thrown into an argument as a form of closure against which the respondent must, necessarily, have no come-back, the applicability to the argument being self-evident. It borders upon an inverse ad hominem where the aged-one is denigrated with a feather boa ensuring the lack of relevance to the argument goes unchallenged.
Yet surely, the use of brain and body must commence at birth, to ensure all is not already squandered in the foothills.