Dolphins, unlike us, do not have manual skills, but their dances, jumps, are perhaps the equivalent of our ballet. Sounds, like music in the Orthodox… - Jerzy Vetulani

Woźniak, Olga; Vetulani, Jerzy (24 December 2011): Stań się dobrym. To się opłaca, interview. Gazeta Wyborcza (in Polish).

The biological goal of the existence of every organism becomes understandable when we realize that it acts as a protector of genes worn in it, which must ensure that they move into the child's body before the caregiver himself becomes old and can not function properly.

The expression of aggression is conditioned both biologically and culturally and it can be learned. On the other hand, proper upbringing can completely eliminate aggressive behavior, but it must be remembered that biological conditions remain present and aggression can easily be restored.