don't put all your eggs in one basket

Proverb

 * 1) Do not dedicate all your resources to one project.
 * 2) Do not count on any one thing to safeguard what is valuable.

Usage notes
Its use in print has been traced to the novel "Don Quixote" by Miguel de Cervantes in the early 1600s.

Translations

 * French:
 * Polish: nie stawiaj wszystkiego na jedną kartę.
 * Russian: не клади все яйца в одну корзину
 * Spanish: no hay que poner todos los huevos en una sola canasta