One learns to itch where one can scratch.
The wise duck keeps his mouth shut when he smells frogs.
Where the road bends abruptly, take short steps.
When struck by a thunderbolt it is unnecessary to consult the Book of Dates as to the precise meaning of the omen.
Although there exist many thousand subjects for elegant conversation, there are persons who cannot meet a cripple without talking about feet.
One cannot live for ever by ignoring the price of coffins.