Meaning of “Certainly, it is heaven upon earth, to have…”

Tao Teh King, chapter 47, James Legge translation; the sentence belongs to a passage about knowing without compulsive outward searching.

Paradise Lost (1667), Book I, lines 254–255; Satan speaks the sentence beginning ‘The mind is its own place.’ This collection retains normalized modern orthography; the scan-backed 1667 transcription reads forms including ‘in it self’ and ‘Heav’n.’ Character context matters because this is Satan’s argument, not Milton speaking autobiographically.

Tao Teh King, Chapter 15, James Legge translation, Project Gutenberg #216. The next sentence asks how the condition of rest is secured and answers through the gradual relation between movement and rest; the passage belongs to Taoist philosophy, not a clinical relaxation technique.

Essays of Montaigne, Book I, Chapter XXXI, ‘That a Man Is Soberly to Judge of the Divine Ordinances,’ Charles Cotton translation edited by William Carew Hazlitt (1877); Project Gutenberg Volume 06 #3586 / Complete Essays #3600. The sentence appears in Montaigne’s skeptical warning about confidence concerning unknown things and speculative claims about divine purposes.

The Prophet, section “Self-Knowledge.” A man asks Almustafa to speak about self-knowledge, and Almustafa answers with this line before describing the heart’s knowledge and the self as a boundless sea. The represented wording is the 1923 text preserved by Wikisource/Project Gutenberg #58585.

The Way of Peace; Allen links self-mastery with clearer perception and a less distorted relationship to circumstances and other people.