“They who truly know have had to unlearn hardly less than they have had to learn.”

Verse XL.3
Tirukkural

Antisthenes, 4.
The Lives and Opinions of Eminent Philosophers (c. 200 A.D.), Book 6: The Cynics

Source: Eclipse of God: Studies in the Relation Between Religion and Philosophy (1952), p. 6

§ 7
From Lives and Opinions of the Eminent Philosophers by Diogenes Laërtius

(A.J. Broomhall. Hudson Taylor and China’s Open Century, Book Four: Survivors’ Pact. London: Hodder and Stoughton and Overseas Missionary Fellowship, 1984, 346).

Source: The Heritage Universe, Summertide (1990), Chapter 5, “Summertide Minus Thirty” (p. 61)

"Fall of a City"
Selected Poems (1941)
Context: All the lessons learned, unlearned;
The young, who learned to read, now blind
Their eyes with an archaic film;
The peasant relapses to a stumbling tune
Following the donkey`s bray;
These only remember to forget. But somewhere some word presses
On the high door of a skull and in some corner
Of an irrefrangible eye
Some old man memory jumps to a child
— Spark from the days of energy.
And the child hoards it like a bitter toy.

War Memoirs (1938)
War Memoirs