林兆恩，字懋勳，別號龍江，道號子穀子、心隱子，晚年又號混虛氏、無始氏，莆田赤柱人，生於明正德十二年（1517），卒於明萬曆二十六年（1598），終年82歲。其祖林富曾任兵部侍郎，與王陽明過往甚密。林氏一生倡三教合一，創“三一教”，故世稱三教先生，林三教。三一教，又名夏教，以“道釋歸儒，儒歸孔子”為教旨倡三教合一而名“三一教”，林兆恩“三教合一”的宗教思想深受陽明心學影響，在心學的理論前提之下，其“三教合一”的宗教思想主要包括：道一教三說，三教一致說，非非三教說，三教合一說以及歸儒宗孔說等四個方面內容。

Lin Chao-En, a famous religionist in the late Ming dynasty, founded a religion called “Three-in-One” religion, which means to combine the three main Chinese religions — Confucianism, Daoism, and Buddhism — into one religion. It is a homogeneous religion, and has a great influence on the Chinese folk religion since then. This article focuses on the religious doctrines of Three-in-One, and tries to analyze it under the influence of Yangming School.