The assessment is based on strong, consistent evidence from multiple sources, with no contradictions found. A secondary news source, Devdiscourse, provides the most direct and compelling evidence, explicitly reporting on remarks by John Williams and stating that "gradual asset purchases could commence." This language is a very close match to the user's query.This direct evidence is strongly supported by the context established in the highest-authority primary sources. The official speech transcript, presentation slides, and a summary blog post from the New York Fed all confirm that Williams delivered a speech on the "Theory and Practice of Monetary Policy Implementation." Asset purchases are a core component of this topic, making it the appropriate venue for such a statement. Other secondary sources, such as Mace News and Futunn News, also report on Williams's remarks concerning the Federal Reserve's balance sheet and quantitative easing, further corroborating the subject matter.While the provided summaries of the primary sources do not contain the exact quote, their subject matter is perfectly aligned with the statement. The direct reporting from a financial news outlet, combined with the contextual evidence from the official Federal Reserve sources, creates a high degree of confidence that the statement is an accurate reflection of John Williams's remarks.