“El verdadero instrumento del progreso radica en el factor moral.”
Giuseppe Mazzini 10
político italiano 1805–1872Citas similares

“El optimismo es la verdadera moral.”
Sin fuentes

“El verdadero progreso es el que pone la tecnología al alcance de todos.”
De Henry Ford

“La cultura engendra progreso y sin ella no cabe exigir de los pueblos ninguna conducta moral.”

Original: «The progress of mankind is due exclusively to the progress of natural sciences, not to morals, religion or philosophy».
Fuente: Active Pharmaceutical Ingredients in Synthesis: Catalytic Processes in Research and Development. Autores Anthony J. Burke, Carolina Silva Marques, Nicholas J. Turner, Gesine J. Hermann. Editorial John Wiley & Sons, 2018. ISBN 9783527807246. p. 359. https://books.google.es/books?id=nvRlDwAAQBAJ&pg=PA359&dq=The+progress+of+mankind+is+due+exclusively+to+the+progress+of+natural+sciences,+not+to+morals,+religion+or+philosophy.+Justus+von+Liebig&hl=es&sa=X&ved=0ahUKEwig24yGt9zgAhV65-AKHT6eB-wQ6AEIKzAA#v=onepage&q=The%20progress%20of%20mankind%20is%20due%20exclusively%20to%20the%20progress%20of%20natural%20sciences%2C%20not%20to%20morals%2C%20religion%20or%20philosophy.%20Justus%20von%20Liebig&f=false

Idioma_original: «I invented nothing new. I simply assembled the discoveries of others men behing whom were centuries of work...progress happens when all the factors that make for it are ready and then it is inevitable.»
De Henry Ford
“El verdadero problema ético no es la moral, sino la acción individual.”