According to Osho, Lao Tzu’s unique contribution isn’t another doctrine but a total negation of doctrines: he stands against all accumulated knowledge and punditry—including the Vedas, Upanishads, and Gita—demanding direct, innocent seeing. You cannot meet him through borrowed scriptures; only by dropping the ‘heap’ of prior knowing can the inner meaning be heard freshly, beyond words and styles.
Lao Tzu’s gift is telling you to drop what you think you know and look with fresh, empty eyes.