“Yo doy el 98 por ciento de mi energía mental al ajedrez. Otros dan apenas el 2 por ciento.”

Norwegian Wood

Fuente: Villegas, Manuel. Psicología de los siete pecados capitales. Herder Editorial, 2018. ISBN 9788425441356. 216 páginas. https://books.google.es/books?id=fgWIDwAAQBAJ&pg=PT70&dq=La+indignaci%C3%B3n+moral+es,+en+la+mayoria+de+los+casos,+un+dos+por+ciento+de+moral,+un+cuarenta+y+ocho+por+ciento,+indignaci%C3%B3n,+y+un+cincuenta+por+ciento,+envidia&hl=es&sa=X&ved=0ahUKEwjUj-WJ9rHiAhVD7eAKHX4bDYAQ6AEIKDAA#v=onepage&q=La%20indignaci%C3%B3n%20moral%20es%2C%20en%20la%20mayoria%20de%20los%20casos%2C%20un%20dos%20por%20ciento%20de%20moral%2C%20un%20cuarenta%20y%20ocho%20por%20ciento%2C%20indignaci%C3%B3n%2C%20y%20un%20cincuenta%20por%20ciento%2C%20envidia&f=false

Fuente: Electro-erosión: fundamentos de su física y su técnica. Autor Albert Camprubí Graell. Editorial Marcombo, 2007. ISBN 9788426714602. p. 1. https://books.google.es/books?id=YBviAL_qBYEC&pg=PA1&dq=El+genio+es+uno+por+ciento+de+inspiraci%C3%B3n+y+un+noventa+y+nueve+por+ciento+de+transpiraci%C3%B3n.+Thomas+Alva+Edison&hl=es&sa=X&ved=0ahUKEwjwuaHswvrgAhXKxYUKHVKuC8IQ6AEITjAH#v=onepage&q=El%20genio%20es%20uno%20por%20ciento%20de%20inspiraci%C3%B3n%20y%20un%20noventa%20y%20nueve%20por%20ciento%20de%20transpiraci%C3%B3n.%20Thomas%20Alva%20Edison&f=false

Original: «Anything's possible. You can be told that you have a 90-percent chance or a 50-percent chance or a 1-percent chance, but you have to believe, and you have to fight».
Fuente: Armstrong, Lance. It's Not About The Bike: My Journey Back to Life. Editorial Random House, 2012. ISBN 9781448104987. https://books.google.es/books?id=7zO0mbJUWHUC&pg=PT184&dq=Anything+is+possible.+You+can+be+told+that+you+have+a+90-percent+chance+or+a+50-percent+chance+or+a+1-percent+chance,+but+you+have+to+believe,+and+you+have+to+fight.+Lance+Armstrong&hl=es&sa=X&ved=0ahUKEwjptvHr5N7gAhXRxYUKHQcsBJIQ6AEIKDAA#v=onepage&q=Anything%20is%20possible.%20You%20can%20be%20told%20that%20you%20have%20a%2090-percent%20chance%20or%20a%2050-percent%20chance%20or%20a%201-percent%20chance%2C%20but%20you%20have%20to%20believe%2C%20and%20you%20have%20to%20fight.%20Lance%20Armstrong&f=false

Variante: El genio se compone del dos por ciento de talento y del noventa y ocho por ciento de perseverante aplicación