十八世紀德國哲學家伊曼紐爾·康德提出咗一種混合理性主義同經驗主義嘅理論。康德講，“就算我哋全部知識由經驗開始，但知識係唔會遵循經驗去產生出途徑。” 按照康德嘅理論，後驗知識係屬於經驗，由經驗嘅內容去決定。康德認為：“好有可能，我們嘅經驗知識只係我哋通過印象同認知器官本身提供嘅內容所（感官印象只提供咗一種“偶然性”）所得到嘅一個集合。” 於是，佢所得出嘅結論同經驗主義者唔同，康德認為先驗知識係獨立於經驗而存在。更進一步講，佢同理性主義者唔同，康德認為先驗知識只係以純粹形式存在，唔會混雜有任何經驗嘅內容。“先驗”知識係對經驗可能性條件嘅推理。呢種“先驗”，或者叫做超驗嘅條件，呢樣係人類認知器官中先天具有，唔可能由任何經驗得到。康德提出呢套理論並且對純粹形式推導出來嘅“先驗”而引起嘅超驗邏輯可能性進行咗討論。純粹“先驗”知識包括類似時間同因果嘅概念。康德認為，純粹先驗知識可以由佢嘅超驗美學同超驗邏輯所確立。康德提出，如果冇呢啲“先驗”知識作為人類個體認知嘅建構，人類個體就唔會具備經驗嘅能力。例如，當一個人嘅認知器官中時間同因果律都失效時，佢就無法將呢個世界認知為一個由自然規律所形成嘅世界。呢種看法就係康德嘅主要著作“純粹理性批判”嘅中心論點——超驗推理。
The eighteenth-century German philosopher Emmanuel · Kant proposed a theory of mixed rationalism and empiricism. Kant said that even if all our knowledge begins with experience, knowledge does not follow experience to produce a way. According to Kant's theory, posterior knowledge belongs to experience and is determined by the content of experience. Kant argues that it is quite possible that our empirical knowledge is only a collection of what we obtain through impressions and the content provided by the cognitive organs themselves (sensory impressions provide only a kind of ape-like uranium). Thus, unlike the empiricists, Kant held that a priori knowledge exists independently of experience. Further, unlike the rationalists, Kant believed that a priori knowledge existed only in its pure form, without any empirical content. "A priori" knowledge is the reasoning about the conditions of empirical possibility. This pre-detection valve, perhaps called the transcendental condition, is an innate possession of the human cognitive organ and cannot be obtained from any experience. Kant proposed this theory and discussed the possibility of transcendental logic arising from the pre-emptive indignation derived from the purely formal deduction. Purely antecedent knowledge includes concepts like time and causality. Kant believed that pure transcendental knowledge could be established by his transcendental aesthetics and transcendental logic. Kant proposed that without these prior detective knowledge as a construction of human cognition, the human individual would not have the ability to experience. For example, when a person's cognitive organs are ineffective in both time and the laws of cause and effect, he cannot perceive the world as a world formed by the laws of nature. This view is the central thesis of Kant's main work, the Critique of Pure Reason, Transcendental Reasoning.