Victor Hugo, Les Miserables

[T]here are many great deeds done in the small struggles of life. There is a determined though unseen bravery, which defends itself foot to foot in the darkness against the fatal invasions of necessity and of no baseness. Noble and mysterious triumphs which no eye sees, which no renown rewards, which no flourish of triumph salutes. Life, misfortunes, isolation, abandonment, poverty, are battlefields which have their heroes; obscure heroes, sometimes greater than the illustrious heroes.

["Marius," Book Fifth, Chapter I]