The MFA Boston is selling "eight paintings from its collection, including works by Claude Monet, Paul Gauguin, Alfred Sisley, Camille Pissarro, and Auguste Renoir. The works, valued at between $16.6 million and $24.3 million, were all gifts to the MFA."
Remember: once an object falls under the aegis of a museum, it is held in the public trust, to be accessible to present and future generations.
And if this sale is allowed to go forward, somebody will say, Why should I give this to you? What guarantee do I have that you're not going to sell this tomorrow?