BEIJING -- In the book-lined office of Professor Stelios Virvidakis at the University of Athens, Greece's oldest and most esteemed academic institution, a letter is carefully preserved like a precious, delicate bridge model.

It came from President Xi Jinping, delivered to congratulate the inauguration of the China-Greece Center for Mutual Learning of Civilizations in the time-honored university in February 2023.

"It was a delightful surprise to us all," said Virvidakis, his philosopher's gaze softening at the memory.

In the letter, Xi noted that over 2,000 years ago, China and Greece, two civilizations glittering at each end of the Eurasian continent, made groundbreaking contributions to the evolution of human civilization.

Now, he pointed out, it is of profound historical and contemporary significance for them to work together to promote exchanges and mutual learning and enhance the development of all civilizations.

The well-preserved letter reflects Xi's broader vision of fostering cross-cultural dialogue and mutual learning as a catalyst for global peace and development, a vision that has been driving his diplomatic action worldwide.

That aspiration is best embodied in his Global Civilization Initiative (GCI), launched at a conference between the Communist Party of China (CPC) and global political parties in 2023, where he stressed that tolerance, coexistence, exchanges and mutual learning among different civilizations play an irreplaceable role in advancing humanity's modernization process when the future of all countries are closely connected.

With the GCI nearing its second anniversary on Saturday, Xi's vision -- to build a world where civilizations don't collide but converse -- has become ever more relevant, standing both as a nod to ancient ties and as a bold stitch in a fraying global tapestry.