"...For everyone who knew him personally, it was a joy that Ülo Sooster lived. He was infinitely, unbelievably talented — both in art and in life. His extraordinary painting is still awaiting its fame. In graphic art, he created his own style."
"Ülo Sooster and his work endured a great deal... Seven of the ten promised years he gave to the most common form of interaction between man and authority – the Gulag. To the dismay and surprise of the rulers, he survived, breathed, sketched, and loved. In his art, memories of childhood emerged – junipers, fish, shells, birds. Dreams of youth – women. Reflections on the understanding and generalization of Time and Space – the egg."
"Ülo Sooster is one of the few Estonian painters to whom the term 'international artist' can be applied. And at the same time, paradoxical as it may seem, such a definition in relation to him would remain narrow and inaccurate... International and national are intertwined in Sooster's work with the search for his own identity. Ülo Sooster was a key figure between Estonia and Moscow for more than two decades, and thanks to his personality, these relations were by no means only between the province and the metropolis. It was an active mutual connection: giving and gaining."