A man is always pleased to have his most serious efforts praised, and the highest aspect of his nature get the most sunshine.
 Oliver Wendell Holmes Sr., The Autocrat of the Breakfast-Table (1858). copy citation

Context

“It sometimes seems to me, as I know it does to others who have told me so, that they ought to be all best,—if not in actual execution, at least in plan and motive. I am grateful—he continued—for all such criticisms. A man is always pleased to have his most serious efforts praised, and the highest aspect of his nature get the most sunshine. Yet I am sure, that, in the nature of things, many minds must change their key now and then, on penalty of getting out of tune or losing their voices. You know, I suppose,—he said,—what is meant by complementary colors?” source