expression
forewarned is forearmed; in fair weather prepare for foul; don't forget war in time of peace
Proverb advising preparedness and vigilance even in peaceful times. Literally: 'While in peace, do not forget war.'
「治に居て乱を忘れず」という言葉を胸に刻んで、日々の備えを怠らないようにしている。
I keep the saying 'forewarned is forearmed' in mind and try not to neglect daily preparations.
Similar proverb about preparedness, but focuses on having provisions rather than maintaining a vigilant mindset.
A classical Chinese-derived proverb, originally from the Chinese text 'Shuoyuan' (説苑). The exact historical derivation is uncertain, but it has been used in Japanese as a set phrase for centuries.