The French Proverb:

"Qui vole un oeuf, vole un boeuf",

literally translated to: "He who steals an egg, will steal a bull". Meaning, someone who steals something small is capable of stealing something big and cannot be trusted.

You can break a finger while picking your nose=
life is full of unexpected risks.
Yiddish

Semper ubi sub ubi.

I don't know if it's an Irish saying but my Irish grandmother used to say:

"A healthy man wants a thousand things; an ill man wants one."

Take care of your health.

In Spanish: "If the wicked knew what good business it is to be good, they would be good—even if only for business."