List of authors
- Ady Endre (1 quote)
- Antoine de Saint-Exupéry (1 quote)
- Aristoteles (4 quotes)
- Arkimedes (1 quote)
- Bobby Fischer (1 quote)
- Charles Chaplin (1 quote)
- Edgar Allan Poe (2 quotes)
- Edmund Burke (2 quotes)
- Francisco Goya (1 quote)
- Franz Kafka (1 quote)
- Gabriel Aresti (1 quote)
- Gabriel García Márquez (1 quote)
- George Bernard Shaw (7 quotes)
- George Orwell (3 quotes)
- Giacomo Leopardi (1 quote)
- Hasier Agirre (86 quotes)
- Isaac Newton (1 quote)
- Jean Cocteau (1 quote)
- Jean-Paul Sartre (1 quote)
- José Saramago (1 quote)
- Julio Zesar (1 quote)
- Lucian Velea (1 quote)
- Mark Twain (1 quote)
- Miguel Unamuno (1 quote)
- Neil Armstrong (1 quote)
- Neil Gaiman (1 quote)
- Nikos Kazantzakis (1 quote)
- Oscar Wilde (8 quotes)
- Pablo Picasso (1 quote)
- Plauto (1 quote)
- San Josemaría Escrivá de Balaguer (1 quote)
- Simone de Beauvoir (1 quote)
- Sokrates (1 quote)
- Unai Elorriaga (2 quotes)
- Valeriu Butulescu (13 quotes)
- William Butler Yeats (6 quotes)
- William Shakespeare (3 quotes)