Authors:

If nobody ever offers an opinion or takes the slightest interest in one's production, one loses not only all pleasure in them, but all power of judging their value.

Sebastian Hensel, Felix Mendelssohn-Bartholdy, Fanny Mendelssohn Hensel (1968). “The Mendelssohn family 1729-1847: from letters and journals”
If nobody ever offers an opinion or takes the slightest interest in one's production, one loses not only all pleasure in them, but all power of judging their value.