"Nasser D. Khalili lives, thinks and breathes art. For him life and art are noble and inseparable. Nobody believes more in the healing power of art and the lessons we can learn from it."

"My Dear David, what can I say - here stands a Galileo. I have known you for many years when the late holy father Pope John Paul II of blessed memory created you a knight of St. Sylvester. I said of you at that time, if you remember, that you had in one person the great wisdom of 3 religious leaders, a Chief Rabbi, a Cardinal and a Grand Mufti. This is true then and it's true today."

"Ownership is nothing but a myth, we are only a temporary custodian of what we believe we own"

"Rencontre avec le plus grand collectionneur du monde, Nasser David Khalili, collectionneur de légende” (Meeting with the Greatest Collector in the world – Nasser D Khalili, legendary collector)"

"Like most great philanthropists, he is passionate but there is a certain timeless wisdom about him too."

"David is passionate about the cause of peace and has made a remarkable contribution to improving dialogue, understanding and respect between those of different faiths. I have discussed these issues with David many times over the years and it is his dedication to the cause ad his rational and compassionate thinking that has always been apparent."

"We salute you Prof. Khalili, for enabling us to stage this unique exhibition"

"Professor Khalili’s contribution to the world of art and culture is unparalleled, and for him to be called the Medici of the 21st century is no exaggeration."

"At that time we could not have guessed the existence of Professor Khalili’s collection… a feat which could not possibly be duplicated or even approached by any museum in the world today…"

"…A landmark in the study of nineteenth century Spanish decorative art."

"Today I am speechless and proud to be Japanese"

"…the appreciation of all the Zuloaga descendants [goes] to Prof Khalili… for this superb collection of damascene art, and… for having given the world the opportunity to admire the works, not only of the Zuloagas, but of all the Basque artisans like them."

"The main reason for the exhibition of Wonders of Imperial Japan at the Van Gogh Museum was its connection to Van Gogh's painting. It was Van Gogh who said I his letter to his brother Theo in 1888 "In a way all my work is founded on Japanese art""

"Many items in the Nasser D. Khalili collection are completely unique - without parallel in museums let alone the market. It is a collection that would be impossible to recreate."

"The Khalili Collection `Enamels Of The World 1700 – 2000’, which includes spectacular masterpieces from all the major centres of enameling, is pioneering in its focused study of the subject. Unique in its scope, the Collection reveals the remarkable technical achievements of the enamellers and encourages a greater awareness of the range of their activity. For these reasons I was convinced that the first public showing of the Collection should take place in the galleries of the State Hermitage Museums in St Petersburg"

"His collection is certainly the best in private hands"

"If you had all the money in the world, you couldn't assemble his collection now"

"An unparalleled Art Collector"

"The Khalili Collection of Haji and the Arts of Pilgrimage (700-2000) ranks in importance alongside the collections of the Topkapi Saray Museum in Istanbul, and includes major objects, many of which are unique and irreplaceable and have no parallel in any other collection, private or public."

"The Khalili collection of Meiji art of Japan is only comparable as acknowledged by many scholars and museum directors, in terms of quality and size to the collection of the Japanese Imperial family"

"I wish to thank one of our most dynamic UNESCO Goodwill Ambassadors, Professor Nasser D Khalili, for his passion and unfailing commitment to the values of heritage. He has spent considerable time and effort safeguarding Islamic heritage and is now the custodian of the largest group of objects related to the Holy City of Makkah."

"Art is a universal language that can unite the hearts of mankind, crossing all frontiers, penetrating everywhere. The moment has come for the 'people of the book' - Jews, Christians, Muslims - to speak openly to one another and to see clearly the close cultural, social, spiritual and intellectual ties that have existed between them for centuries. In fact, Jews and Muslims are cousins, and I believe it is far better for us to live together in peace and harmony, than die together in disgrace"

"Finally, money is just paper. My loyalty is to the objects; to be hnoest, I really don't care about the financial side of it too much. People forget that whenever you are faced with a masterpiece, the day you pay for it it may be a bit expensive, but if you wait one month, two months, six months, then it becomes terribly cheap."

"Giving exhibitions is like throwing a drop into an ocean. Any contribution to the enhancement of the understanding of Islamic culture adds to that ocean, which I call the ocean of understanding. The greatest and one of the strongest bridges between cultures is the one that is built out of art. Religion and politics have their own dialects. The language of art is universal. There you are safe. Nobody can label you."

"Our collection presents the totality of Islamic art, the way it should be presented, from China to North Africa. I didn't want to collect only things that were made for kings and queens because that's the wrong way to present any culture. You have to represent the objects that were used in everyday life, in ordinary homes."

"I'm delighted to have every single object that we have, because every one of them is part of that picture. I know each one of them - where I bought it, whom I bought it from, how much I paid for it. That is why I was able to put together what I have put together. If somebody walked in with something, I always immediately knew whether I had a space for it, or whether I have a similar one, or a better one. Often I have made the decision whether to buy or not in less than 50 seconds."

"My very, very first purchase was when I was about 12 or 13. My father used to take me wherever he went buying or selling anything from the age of eight, because amongst my other sisters and brothers I was the only one who showed interest. We bought ordinary things like Persian lacquer to start with. Many years later I did my PhD on Persian lacquer"

"During the collecting, I don't say anything. When it's done, then I speak."

"I used to buy a group of objects -- let's say, 10 objects for $US100,000 -- keep 3 or 4 of the best aside and sell the rest for $US250,000. I used my knowledge to create money to finance my dream.""

"There are 1.6bn people following the faith of Islam. I realised that no one was representing the core and anchor of that religion, and so I took it upon myself to buy everything that was available"

"Every object has its note and the combination of them all makes the music. There is not much point just having the lead violin and the piano."

"At this stage of my life with the permission of my family I came up with a sort of square rules of what I want to do from here onwards, the rules are very simple I said that I have to look after myself, I have to look after my family, I have to look after my friends and I have to do my charities in this order."