Don't count your chickens before they are hatched.
卵がかえる前にひよこの数を数えるな。
Don't count your chickens.
ひなを数えるな。
Early man used his fingers and toes to count the animals he owned, or the measures of grain he had stored.
初期の人間は、自分が所有する動物や蓄えている穀物の量を数えるのに、手足の指を使った。
People who count their chickens before they are hatched act very wisely because chickens run about so absurdly that it's impossible to count them accurately.