With accent marks:
Вода́ ка́мень то́чит.
Water wears away a stone.
Even if you act with little effort but constantly and persistently, you can achieve a lot.
The English equivalents of this Russian proverb are: Little strokes fell great oaks, Drop by drop the sea is drained, Water dripping day by day wears the hardest rock away, Water breaks down a mountain.
Other Russian proverbs
Crowded, but not aggrieved.
The apple never falls far from the tree.
The best is the enemy of the good.
Being a guest is good, but being at home is better.
Without labor, you can not even catch a fish in the pond.
A well-fed man does not understand a starving one.
Your own shirt is closer to your body.
One head is good, but two ones are better.