The story of human evolution is a story of migration and mixing.
没有魔法,就没有艺术。没有艺术,就没有理想主义。没有理想主义,就没有正直。没有正直,除了生产什么都没有。
The knowledge of the circumstances of which we must make use never exists in concentrated or integrated form, but solely as the dispersed bits of incomplete and frequently contradictory knowledge which all the separate individuals possess.