Terms for subject Proverb containing дремучий

Russian	English
чужая душа – лес дремучий	you can't tell a book by its cover
чужая душа – лес дремучий	another man's mind is a closed book
чужая душа – лес дремучий	you can't read another man's soul
чужая душа – лес дремучий	a stranger's heart is a deep well -it's too dark there to see well
чужая душа – лес дремучий	other people always remain dark horses
чужая душа – лес дремучий	another man's soul is always dark
чужая душа – лес дремучий	still waters run deep