John Stuart Mill was born on the 20th of May, 1806. "I am glad," wrote George Grote to him in 1865, with reference to a forthcoming article on his "Examination of Sir William Hamilton's Philosophy," "to get an opportunity of saying what I think about your 'System of Logic' and 'Essay on Liberty, ' but I am still more glad to get (or perhaps to _make_) an opportunity of saying something about your father. It has always rankled in my thoughts that so grand and powerful a mind as his left behind it such insufficient traces in the estimation of successors.