Proverb (Curiosity killed the cat) warning that excessive curiosity can lead to trouble or danger.
そんな危ない場所に一人で入るな。好奇心は猫を殺すよ。
Don't go into such a dangerous place alone. Curiosity killed the cat.
情報の真偽を無断で調べに行くのはやめておけ。好奇心は猫を殺すというだろう。
Stop trying to check the truth of that information on your own. As they say, curiosity killed the cat.