Constant dripping wears away the stone

Sometimes ‘dropping’ is used instead of ‘dripping’. The lesson to be learnt is summed up in the last two words of this quotation from Ovid: ‘What is harder than rock, or softer than water? Yet soft water hollows out hard rock. Only persevere.’

See also:

• If at first you don't succeed, try, try, try again
• It's dogged that does it
• Little by little and bit by bit
• Little strokes fell great oaks
• Rome was not built in a day
• Slow but sure wins the race
• Where there's a will there's a way