The Lotus Sutra Translated by Burton Watson chapter 16 quote

"Because living beings have different natures, different desires, different actions, and different ways of thinking and making distinctions, and because I want to enable them to put down good roots, I employ a variety of causes and conditions, similes, parables, and phrases and preach different doctrines. This, the Buddha's work, I have never for a moment neglected." The Lotus Sutra
Translated by Burton Watson, chapter 16