他在那里且并不沉默

薛华护教学三部曲的重要组成部分，专门论证基督教世界观的认识论基础。书名"他在那里且并不沉默"强调了两个关键真理：上帝的存在性和上帝的启示性。薛华论证，只有承认有位格的、三位一体的上帝的存在，人类的认识活动才有可能。非基督教哲学在解释统一性与多样性、有限与无限的关系时陷入无法解决的困难，唯有基督教能为人类知识提供坚实基础。

An important component of Schaeffer's apologetic trilogy, specifically arguing for the epistemological foundations of a Christian worldview. The title "He Is There and He Is Not Silent" emphasizes two key truths: God's existence and God's revelatory nature. Schaeffer argues that only by acknowledging the existence of a personal, Trinitarian God can human cognitive activity be possible. Non-Christian philosophies encounter insurmountable difficulties in explaining relationships between unity and diversity, finite and infinite; only Christianity can provide solid foundations for human knowledge.