| Principles of Life | |
| Director: | Constantin Popescu |
| Producer: | Ada Solomon |
| Starring: | Vlad Ivanov |
| Cinematography: | Liviu Marghidian |
| Editing: | Corina Stavila |
| Runtime: | 97 minutes |
| Country: | Romania |
| Language: | Romanian |
| Budget: | €600,000 |
Principles of Life (ro|Principii de viață) is a 2010 Romanian drama film directed by Constantin Popescu and starring Vlad Ivanov. It is set during 24 hour in the life of a middle-class man with a poor connection to his family.[1] It was Popuscu's second feature film, released half a year after his debut, Portrait of the Fighter as a Young Man.[2]
The film was written by Răzvan Rădulescu and Alexandru Baciu. The budget was 600,000 euro. Filming took place in Bucharest from 21 September to 20 October 2009.[3]