L'assoluto naturale (internationally released as He and She and She and He) is a 1969 Italian drama film directed by Mauro Bolognini.

The plot focuses on a mysterious romance involving an uninhibited woman (Koscina) and a dour photographer (Harvey), shot in strange modernist interiors and abstract "sports car on a highway to nowhere" exteriors.

The work of cinematographer Ennio Guarnieri in this film has been referred to as "one of the cornerstones of Italian photography in the sixties".

[1] Peter, a young English photographer on vacation in Italy, crosses paths with Ella, an attractive bourgeois lady.

She dismisses one of his romantic manuscripts and highlights the mating habits of silkworms, inviting him to explore the women in her family.