ἕως ἂν νὺξ ἀμείψηται φάος

From LSJ

οὔποτε ποιήσεις τὸν καρκίνον ὀρθὰ βαδίζειν → thou shalt never make the crab walk straight

Source

English > Greek (Woodhouse Quotes Reversed)

till night give place to day