[あまだれいしをうがつ, amadareishiwougatsu] (exp) (id) slow but steady wins the race; constant effort will result in success; constant dripping wears away a stone
[てんてきせんせき, tentekisenseki] (exp) constant dripping wears away the stone; little strokes fell great oaks; limited strength, when persistently applied, can accomplish great feats