Philosophers, as I have had reason to say before, have the habit of using 'greatest' lavishly. Not just philosophers, these days. After all, one sees 'Greatest Of All Times' scattered around like confetti these days. Virat Kohli is GOAT, simultaneously Suryavanshi is GOAT and so on and so forth. So, yeah, I think that we have no real cause to laugh at philosophers for calling one character trait great today and another tomorrow, do we?
So, Tiru says this and I will not listen to anyone talking of what he said yesterday or day before...
Karumam Seyaoruvan Kaidhooven Ennum Perumaiyin Peedudaiyadhu IL- Tirukkural
Nobody deserves the highest honors more than he who unceasingly persists in his duty to his family and community - Loose Translation
Well, Bhagavad Gita probably has something to say on similar lines. Though, the Gita inclines more to telling a person how to achieve spiritual heights than honors on Earth. This 'doing his duty to his family and community' would translate to doing his dharma in the Gita.
The 'unceasingly persists' part requires some understanding. When would you want to 'cease' the most? Is it not when you despair of succeeding in goals? I mean, when you cease to see it as your duty - your dharma - and start looking to measuring the goals...THAT's when the thought of ceasing enters your mind, no? Do you, for example, think about 'ceasing' eating; get bored with breathing? When dharma is a part of your being, an instinctive set of actions that you do not think about exercising a choice about...IS that not what the Gita says in 'Karmanyeva adhikaraste...'? So, to persist in doing something regardless of obstacles...THAT is extremely laudable, no? (AND do not start off on stupidly doing things over and over without considering if it is workable. Your 'duty to family and soceity' does not mean stubbornly doing unproductive things. You'd see your duty as 'logistics', say, and not as driving a bullock cart.)
Tiru, in a way, is indicating that what works for Nirvana would as well work for honors in the mundane world. Who am I to oppose him when he is backed by the Lord of the Universe?