Don't you think the middle of the 20th century would fit the bill? And please also note that I was only suggesting that Gandhi's application of ahimsa was, perhaps, a morally superior teaching to Krishna's appeal to Arjuna's sense of duty.
My main point though, is that there are (and have been) many wise men. Gandhi appears, in the eyes of many, to have been a kind of unreformed Arjuna or even a latter day Dhritarashtra (the King who counseled Yudhisthir not to fight, arguing, essentially, that it would be better to allow unrighteousness rulership to go unchecked than to join in the carnage of righteous warfare). But morally, Gandhi elevated his teachings above the plane of human conflict. His teachings may be influential in the minds of humans, but it has had little effect on humankind simply because it has not been adopted as the totem of any 'great civilization'.
Krishna, I am guessing (and I am fairly sure a good number of Hindus would agree), would have opposed Gandhi's position just as he did Arjuna's and Dhritarashtra's. But which is the higher dharma - our duty to the lives of other humans or our duty to the social order? And who decides which social order is right if it's not the one that values life as more sacred than territory or rulership?
That conflict is unresolved - as far as I can see - in the teachings of the "Great Educators". Krishna, Moses and Muhammad seem to stand on one side, boldly defending a righteous social order, whilst Jesus and Gandhi (if I can put a wise man rather than a "Great Being" in the list) stand on the other, "turning the other cheek" and letting themselves be "wronged" and "defrauded" in pursuit of moral excellence. (Matthew 5:39; 1 Corinthians 6:7) (I don't know enough about the teachings of Buddha, Zoroaster or Bahá'u'lláh to comment on their positions).
The point is: the "Great Educators" equivocate on this - probably the most important question for the human family (which question could be rephrased: "how can we stop killing each other") - and even the ones who have plumped for non-violence have been largely ignored (on that most important aspect) as their teachings have been elevated to the status of "Great Religion". I am still failing to see how protraction or repetition of the same process will help.
I wholeheartedly agonize with you on the dilemma of why we don't stop killing each other despite having had numerous Great Teachers come to try and elevate us above these animalistic tendencies.
Firstly, we live in a time of darkness so we cannot envisage or know how it felt say to live in the Golden Eras of these Teachers.
What, if anything, can instill in us that self same hope and spirit the early disciples of Jesus would have had? Or are we living in a time of no hope and complete despair? It would seem so to those who have not been inebriated with the wine of the knowledge of Baha'u'llah.
But with His coming, a new spirit has dawned. A spirit of massive hope and confidence in our future, a glorious future. But to see this vision one needs to be in touch with that spirit by either reading the Writings of Baha'u'llah or/and mixing with Baha'is.
We are building a new world civilisation from scratch. Sounds unbelievable but we already have a worldwide community, a cross section of humanity comprised of the most hostile and once antagonistic sects, races and nationalities, all united working together harmoniously.
A Shangrila if you like to call it in the midst of this hell hole of a depressing world.
People can't believe such hope and happiness does exist without being mentally deranged. I say - come and see for yourself.
Humanity will pass through some more dark times but it will enter a golden age of peace and prosperity never before witnessed on this planet and I'm so glad my life is helping lay the foundations of it for future generations.
There is a beautiful future in store for humanity. All we need to do is embrace it.