洛克認為反思只係經驗中嘅一部分，提出應該將先驗呢個觀唸完全被拋棄。休謨認為所有先驗知識不過係觀念之間嘅關係，呢樣喺佢嘅著作《人類理智研究》中多次提出。由於經驗主義認為一切知識基於經驗，對數學真理同邏輯真理提供一個經驗主義嘅說明就成為佢重要嘅任務。
Locke believed that reflection was only a part of experience, and proposed that the idea of a priori should be completely discarded. Huqi believed that all a priori knowledge is nothing more than the relationship between ideas, and this is stated many times in his book The Study of Human Reason. Since empiricism believes that all knowledge is based on experience, it becomes an important task for him to provide an empirical account of mathematical and logical truths.