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
Оne sees the mote in another's eye and ignores the log in his own.
The apple never falls far from the tree.
Make a fool pray to God - he will break his forehead.
Being a guest is good, but being at home is better.
In a healthy body, healthy mind.
Appetite comes with eating.
Eggs don't teach the chicken.
Fear has big eyes.