All sciences are vain and full of errors that are not born of experience, the mother of all knowledge.

All sciences are vain and full of errors that are not born of experience, the mother of all knowledge.

所有的科学都是徒劳的，充满了错误，这些错误并非来自经验，而是所有知识之母。

-- Leonardo di ser Piero da Vinci 达芬奇爵士