Between two stools one falls to the ground.
More Spanish Proverbs:
In hunting and in love you begin when you like and leave off when you can.Spanish
Where you father has been with ink, go not you with a bag (i.e. what your father has sold and assigned, think not to recover with a bag of papers. In other words, don't go to law for it.
Spanish
Two of a trade never agree.
Spanish
See that you tie so that you can untie.
Spanish
More things grow in the garden than the gardener sows.
Spanish
Sleep over it, and you will come to a resolution.
Spanish