We cannot be too careful in choosing our friends.
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You cannot be too careful of traffic when you cross the road.
I cannot thank you enough for your help.
Freedom is such a great blessing that we cannot pay too much for it.
You cannot be too careful in the choice of your books.
The only thing in the world which one can never receive or give too much is love.
One does not spoil children by giving them too much, but by giving them too little.