from The New York Times
Hubert von Sonnenburg, a Leading Conservator of Paintings, Dies at 76
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An obituary for the long-serving (since 1959) paintings conservator at the Metropolitan Museum of Art. What caught my eye was the following passage which intimated at the connoisseurship of conservation, which is seldom discussed in today's conservation forums.

"When restoring a painting," he once said, "the question is not so much which solvent and chemicals or which new scientific methods and high-technology tools to use, but how the picture should look. Of course that is a matter of taste, tempered in part by the condition of the picture, but even more, it is a matter of understanding the art and the artist."