“Learning and wisdom are superfluities, the surface glitter merely, but it is the heart that is the seat of all power. It is not in the brain but in the heart that the Atman, possessed of knowledge, power, and activity, has its seat.”

Source: Light on Life: The Yoga Journey to Wholeness, Inner Peace, and Ultimate Freedom, p. 29

Book 1. Compare: "Great thoughts come from the heart", Luc de Clapiers, Marquis de Vauvenargues, Maxim cxxvii.
The Countess of Pembroke’s Arcadia (1580)

Fourth Realm Trilogy (2005-2009), The Traveler (2005)

Variant translations:
Zeus has led us on to know,
the Helmsman lays it down as law
that we must suffer, suffer into truth.
We cannot sleep, and drop by drop at the heart
the pain of pain remembered comes again,
and we resist, but ripeness comes as well.
From the gods enthroned on the awesome rowing-bench
there comes a violent love.
Robert Fagles, The Oresteia (1975)
God, whose law it is
that he who learns must suffer.
And even in our sleep, pain that cannot forget
falls drop by drop upon the heart,
and in our own despite, against our will,
comes wisdom to us by the awful grace of God.
Edith Hamilton, The Greek Way (1930), pp. 61 and 194 ( Google Books https://books.google.com/books?id=D3QwvF3GWOkC&lpg=PA61&ots=BacvHvGm6e&dq=%22And%20in%20our%20own%20despite%2C%20against%20our%20will%2C%20Comes%20wisdom%22%20-kennedy&pg=PA194#v=onepage&q=%22our%20own%20despite%22&f=false)
Robert F. Kennedy quoted these lines in his speech announcing the assassination of Martin Luther King, Jr. on 4 April 1968. His version http://www.americanrhetoric.com/speeches/rfkonmlkdeath.html:
Even in our sleep, pain which cannot forget
falls drop by drop upon the heart
until, in our own despair, against our will,
comes wisdom through the awful grace of God.
Variant translations of πάθει μάθος:
By suffering comes wisdom.
The reward of suffering is experience.
Wisdom comes alone through suffering.
Source: Oresteia (458 BC), Agamemnon, lines 176–183, as translated by Ian Johnston ( Google Books https://books.google.com/books?id=qz1HpBZ1fTwC&lpg=PA13&ots=C7aohrZRF1&dq=Drips%20in%20our%20hearts%20as%20we%20try%20to%20sleep%2C&pg=PA13#v=onepage&q=Drips%20in%20our%20hearts%20as%20we%20try%20to%20sleep,&f=false)

Source: Atma Bodha (1987), p. 121: Quote nr. 67.

XIV.
Outline of the Doctrine of Knowledge (1810)
Context: Thus then does the Doctrine of Knowledge, which in its substance is the realisation of the absolute Power of intelligising which has now been defined, end with the recognition of itself as a mere Schema in a Doctrine of Wisdom, although indeed a necessary and indispensable means to such a Doctrine: — a Schema, the sole aim of which is, with the knowledge thus acquired, — by which knowledge alone a Will, clear and intelligible to itself and reposing upon itself without wavering or perplexity, is possible, — to return wholly into Actual Life; — not into the Life of blind and irrational Instinct which we have laid bare in all its nothingness, but into the Divine Life which shall become visible to us.

Introduction, Z. Hanfi, trans., in The Fiery Brook (1972), p. 99
The Essence of Christianity (1841)

Source: Ink and Bone

#2861, Part 3
Seventy Seven Thousand Service-Trees series 1-50 (1998)