expression, i-adjective
you can never be too careful; better safe than sorry
A common proverb advising caution; equivalent to 'it's better to be safe than sorry' or 'you can't be too careful'.
旅行の前には、用心に越したことはないから、パスポートのコピーを取っておこう。
Before a trip, you can never be too careful, so let's make a copy of our passports.
Better safe than sorry, so let's choose well-lit streets when walking at night.