he paused for breath , and continued : in a single-minded attempt of that kind , if one be deserving and fortunate , one may perchance attain to such clearness of sincerity that at last the presented vision of regret or pity , of terror or mirth , shall awaken in the hearts of the beholders that feeling of unavoidable solidarity ; of the solidarity in mysterious origin , in toil , in joy , in hope , in uncertain fate , which binds men to each other and all mankind to the visible world .