Well said, Dominic!!

Thank you very much for your comment. Your questions on righteousness, virtue, humanity and sainthood are deep and meaningful, and we welcome this opportunity to share our thoughts and have an intellectual debate.
Let us start with your argument that goodness, righteousness and holiness of an individual must be universally accepted. It raises some very fundamental questions. What is holiness? Can we know a righteous person by looking at his life? If so, on what basis?
As you suggest elsewhere in your post, we can distinguish right from wrong, and we can rely on this innate ability of ours in our deliberations.
Perhaps the best way to verify this view would be to examine our track record. Alas, we will find the results rather disappointing. More often than not, our conclusions about an individual’s righteousness rest on our limited knowledge of their public lives. Furthermore, they are subject to ethical biases and change over time.
Many literary geniuses have explored the contrast between a person’s public image and his genuine character. Shakespeare’s Hamlet, Shaw’s Mrs Warren’s Profession, and Brecht’s Three-penny opera are some outstanding examples. The recent debacle of the statues in the United States and Western Europe (https://www.bbc.com/culture/article/20201112-the-eye-of-providence-the-symbol-with-a-secret-meaning) shows us once again that a hero for some may be a villain for others.
Perhaps the biggest flaw of this approach is that it equates holiness to righteousness and virtue. It sees sainthood and holiness only as a form of public recognition and leaves no place for God. But, as Saint Tikhon of Zadonsk wrote, “without Christ, all wise men are mad, all righteous men are sinful, all pure men are impure, and all men are mortal” (https://blog.obitel-minsk.com/2020/12/fifteen-quotes-from-saint-tikhon-of-zadonsk.html).
As we read in the Bible, man was created in the likeness of God (Genesis 1:27). God created man to become like Him, to rise to His level. Many doubt if this is possible, and we need the saints to show us the way. By emulating God like the saints, we all become sainted as well. Living lives of virtue and righteousness are only a part of this.
If all Christians believe in one God, should this mean that a saint in one church must be recognised as a saint in another, as you suggest? Not necessarily. The churches still differ on the meaning of the likeness of God. They understand differently many other notions relating to holiness and righteousness, such as salvation and virtue. Some do not recognise the saints at all, believing that this would violate the second commandment. Even when several Christian churches venerate the same saint, they often do so for different reasons and emphasise different aspects of their lives. Here is a link (http://christianityinview.com/comparison.html) to a nice and simple overview of the ecclesiastical differences between the Orthodox, Catholic and Protestant faiths.
The best you can do is to keep looking until you find the answers that feel right for you. This cannot be done by reason alone. As Apostle Paul wrote, faith is the substance of things hoped for, the evidence of things not seen (Hebrews 11:1). One needs to use one’s mind and also to go by one’s heart.
We recommend this review of the Christian Orthodox understanding of holiness to help you with your search (https://www.goarch.org/-/the-saints-of-the-orthodox-church). You may also find interesting this material which shows how the Orthodox understanding of holiness might impact our everyday lives (https://obitel-minsk.org/saint-nicholas-feast-day).

May God save and protect you!

Thank you so much for the addition!

Sorry, I misunderstood your first question.
Yes, we are talking about St. Therese from Lisieux (1873-1897) here. Аnd she was canonized by the Catholic Church around the same years that Edith Piaf was healed.

I meant this Anastasia and Karina,

“One day they firmly set themselves on going with the child to the church in Lisieux and asking St Therese for help.”

either way thank you for this beautiful article as i liked her song “adieu mon coeur” before i came to know about the Orthodox church.

Mother Teresa is not glorified as a saint in Orthodoxy

As in the convent.

What organization?