GOD guard me from those thoughts men think
In the mind alone;
He that sings a lasting song
Thinks in a marrow-bone…
W. B. Yeats, A Prayer for Old Age.
‘To think what we do not feel, is to lie to ourselves. Everything that we think we must think with our whole being, soul and body.’
Joseph Joubert, Pensées, translated by Katharine Lyttelton.