The Spirit of the Beehive (1973)
Fernando Fernán Gómez: Fernando
Isabel : Papa, have you ever picked a bad mushroom?
Fernando : No. You know why?
Isabel : Why?
Fernando : Because I always do like my grandfather told me.
[he gets up and starts to walk; the girls follow]
Fernando : If you're not sure a mushroom's good, don't pick it. Because if it's bad, and you eat it, it's your last mushroom and your last everything too.