“Science and art belong to the whole world, and before them vanish the barriers of nationality.”

“God and chance belonged to art, eternity and labyrinths to science.”

“Every accomplishment, every refined talent, every useful attainment in mathematics, music, and in all sciences, and art belong to the Saints.”

“National differences and antagonisms between peoples are daily more and more vanishing, owing to the development of the bourgeoisie, to freedom of commerce, to the world-market, to uniformity in the mode of production and in the conditions of life corresponding thereto.The supremacy of the proletariat will cause them to vanish still faster. United action, of the leading civilized countries at least, is one of the first conditions for the emancipation of the proletariat.In proportion as the exploitation of one individual by another is put an end to, the exploitation of one nation by another will also be put an end to. In proportion as the antagonism between classes within the nation vanishes, the hostility of one nation to another will come to an end.”

“Science knows no country, because knowledge belongs to humanity, and is the torch which illuminates the world.”

“Art is the queen of all sciences communicating knowledge to all the generations of the world.”