〜にしくはない・〜にしかず
nothing beats, it's best to
Verb dictionary form / Noun + にしくはない · にしかず (proverbs)
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にしくはない means "nothing is better than": 用心するにしくはない, "you can't be too careful".
しく (如く) is a classical verb meaning "to equal, match", so it's literally "nothing matches X". It's a literary relative of に越したことはない (N2) and に限る (N2), which are more everyday.
The classical form にしかず lives on in proverbs:
- 百聞は一見にしかず: a hundred hearings aren't worth one look, "seeing is believing".
- 三十六計逃げるにしかず: of the thirty-six stratagems, running away is best.
Don't confuse it with にすぎない (N2), "nothing more than".
Examples
用心するにしくはない。
You can't be too careful.
健康のためには、早寝早起きにしくはない。
For your health, nothing beats early to bed and early to rise.
迷ったら、専門家に聞くにしくはない。
If in doubt, it's best to ask an expert.
百聞は一見にしかず。
Seeing is believing.
三十六計逃げるにしかず。
When in doubt, run.