In collection: Xujiahui cangshulou Ming-Qing Tianzhujiao wenxian xubian 徐家匯藏書樓明清天主教文獻續編. --78. 真道自證 （沙守信 Emeric de Chavagnac）
Cf. Ad Dudink & Nicolas Standaert, Chinese Christian Texts Database (CCT-Database).

“ ... after the Edict of Toleration (1692) ... the need for a dialogue had diminished and catechetical writings had become to a greater extent mere expositions of European catechists, while refutation of Chinese teachings, especially of Buddhism and Taoism ... has become sharper. In this regard, the title and the contents of a work published in 1718 are revealing: ‘The true way proved by itself’ (Zhendao zizheng 真道自證), in which the author ... only takes recourse to reason (natural religion) and the Bible (revealed religion); he does not adduce the Chinese Classics and Confucianism for support and is silent on Buddhism and Taoism”--Cf. N. Standaert, Handbook of Christianity in China, v.1., p. 614-615.

“ ... after the Edict of Toleration (1692) ... the need for a dialogue had diminished and catechetical writings had become to a greater extent mere expositions of European catechists, while refutation of Chinese teachings, especially of Buddhism and Taoism ... has become sharper. In this regard, the title and the contents of a work published in 1718 are revealing: ‘The true way proved by itself’ (Zhendao zizheng 真道自證), in which the author ... only takes recourse to reason (natural religion) and the Bible (revealed religion); he does not adduce the Chinese Classics and Confucianism for support and is silent on Buddhism and Taoism”--Cf. N. Standaert, Handbook of Christianity in China, v.1., p. 614-615.

Cover illustration: Bibliothèque nationale de France. Courant 7049
明末清初耶穌會思想文獻匯編 = An expository collection of the Christian philosophical works between the end of the Ming dynasty and the beginning of the Qing dynasty in China ; 第20冊.

Local access dig.pdf. in folder: [Andrew Chung Series].