We've found 2 phrases for prudent (0.131 seconds):

fools rush in where angels fear to tread »    A person who does not plan ahead and think matters through becomes involved in risky or unfavorable situations which prudent people avoid.

penny wise and pound foolish »    Prudent and thrifty with small amounts of money, but wasteful and profligate with large amounts.

BTW, Why won't you become an editor?