He that will not when he can, cannot when he will.
More Spanish Proverbs:
To live in fear is a life half-lived.Spanish
See how he has risen from a mayor to a hangman.
Spanish
For whom does the blind man's wife adorn herself?
Spanish
The heart is like the astrologer who guesses at the truth.
Spanish
As is the king, so are his people.
Spanish
She is good and honoured who is dead and buried.
Spanish