The direct translation of this Japanese idiom is “once you suspect something, all will appear suspicious”, but we think “suspicion breeds devils” is rather badass.
Proof that yojijukugo don’t have to be made up entirely of kanji, the Japanese idiom for “love is blind” includes the hiragana character は (ha, but pronounced ‘wa’).
Kanji breakdown: ichi 一 (one), go 期 (period/time), ichi 一 (one), e 会 (meeting)5.
Kanji breakdown: ichi 一 (one), ren 蓮 (Sacred Lotus), taku 托 (entrust with) shou 生 (life)7.
Kanji breakdown: ichi 一 (one).