无知者无爱。无为者不明。不明者无用。明者爱、察、见。……知之深则爱之切。……以诸果皆熟同莓时者，不知葡也。（帕拉塞尔苏斯【译注：十五、十六世纪文艺复兴时期德国和瑞士籍医生、植物学家、炼金术家、占星术家和神秘学家。】）

原文：

He who knows nothing, loves nothing. He who can do nothing understands nothing. He who understands nothing is worthless. But he who understands also loves, notices, sees. ... The more knowledge is inherently in a thing, the greater the love. ... Anyone who imagines that all fruits ripen at the same time as strawberries knows nothing about grapes.  (Paracelsus)