x years later, he tried to answer the question, "Is synthetic a priori knowledge possible?
The final sentence of a work he published in 1788, stating that the mind is awed by reflection on the starry heavens above and the moral law within, is inscribed on his tombstone. In his most famous work, published in 1781 and in a revised edition si  x years later, he tried to answer the question, "Is synthetic a priori knowledge possible?" FTP, name this German philosopher, who dealt with judgement, practical reason, and pure reason in a series of critiques.
The final sentence of a work he published in 1788, stating that the mind is awed by reflection on the starry heavens above and the moral law within, is inscribed on his tombstone.
Immanuel Kant