When a Ninja does speak — they tend to speak in Japanese proverbs. Here's a few to get you started.
Doku kurawaba sara madeLiterally: If eating poison, eat to the plate.
Meaning: When you take a risk go all the way.
Minu ga hanaLiterally: Not seeing is a flower.
Meaning: Don't let your imagination run away with you.
Anzuru yori umu ga yasashiLiterally: Attempt is sometimes easier than expected.
Meaning: Don't worry just do it.
Baka wa shinanakya naoranai.Literally: Only death cures an idiot.
Equivalent: There's no cure for stupidity.
Deru kui wa utareru.Literally: The stake that sticks out gets hammered down.
Meaning: It's better to fit in (conform).
Akinasu wa yome ni kuwasuna.Literally: Don't let your daughter-in-law eat your eggplants.
Meaning: Don't let yourself be taken advantage of.
Nokorimono ni wa fuku ga aru.Literally: Luck exists in the leftovers.
Meaning: Sometimes first is last.
Koketsu ni irazunba koji o ezu.Literally: If you don't enter the tiger's cave, you will not catch its' cub.
Meaning: Take a risk to be successful.
Equivalent: Nothing ventured, nothing gained.
Saru mo ki kara ochiru.Literally: Even monkeys fall from trees.
Meaning: Even the best fail sometimes.
Naite kurasu mo issho, waratte kurasu mo issho.Literally: Life is the same whether we spend it crying or laughing.
Meaning: Happiness is about your perspective.
Equivalent: Glass half empty, glass half full.
Tade kuu mushi mo sukizukiLiterally: There are even bugs that eat knotweed.
Equivalents: To each his own. There's no accounting for taste.
I no naka no kawazu taikai o shirazu.Literally: A frog in a well does not know the great sea.
Meaning: Experience counts.
Yabu o tsutsuite hebi o dasu.Literally:Poke a bush and a snake comes out.
Meaning: Don't dwell on negative things.
Equivalent: Let sleeping dogs lie.
Kaeru no ko wa kaeru.Literally: Child of a frog is a frog.
Equivalent: Like father, like son.
Tonbi ga taka o umu.Literally: A kite breeding a hawk.
Meaning: Common parents can have extraordinary children.
Fukusui bon ni kaerazu.Literally: Spilt water will not return to the tray.
Meaning: What's done is done. There's no changing the past.
Equivalent: There's no sense crying over spilt milk.
Nito o ou mono wa itto o mo ezu.Literally: If you chase after two hares you won't catch either one.
Meaning: Focus is key to success.
Shiranu ga hotoke.Literally: Not knowing is Buddha.
Meaning: You have to empty your mind of preconceptions before you can really understand.
Nō aru taka wa tsume o kakusu.Literally: The talented hawk hides its claws.
Meaning: Don't show off.
Equivalent: Walk quietly and carry a big stick.
neko ni kobanLiterally: Gold coins to a cat.
Meaning: Some people can't appreciate things.
Equivalent: Like pearls before swine.
neko ni katsuobushiLiterally: Dried fish to a cat.
Meaning: Don't trust someone when something is irresistible.
nanakorobi yaokiLiterally: Stumbling seven times but recovering eight.
Meaning: Perseverance pays off.
Equivalent: Four steps forward, three steps back.
jigou jitokuLiterally: One's act, one's profit.
Equivalent: You shall reap what you have sown.
mizu ni nagasuLiterally: The water flows.
Meaning: Forgiveness is best.
Equivalent: Water under the bridge.
ame futte ji katamaruLiterally: After the rain the earth hardens.
Meaning: Adversity builds character.
ishi no ue ni san nenLiterally: Three years on the rock.
Meaning: It takes a long time to see results (to warm the rock with your butt).
juunin toiroLiterally: Ten men, ten colors.
Equivalent: To each his own.
daidou shouiLiterally: Big similarity, small difference.
Meaning: Similarities outweigh differences.
san mushouLiterally: Scattered clouds.
Equivalent: Disappear without a trace.
kishi kaiseiLiterally: Wake from death
Meaning: To recover from a desperate situation.