“If thou wouldst be implacable, be so with thyself.”
Source: Aphorisms and Reflections (1901), p. 76
Help us to complete the source, original and additional information
John Lancaster Spalding 202
Catholic bishop 1840–1916Related quotes

Tabulae Votivae (Votive Tablets) (1796), "The Key"; tr. Edgar Alfred Bowring, The Poems of Schiller, Complete (1851)
Variant translation:[citation needed]
If you want to know yourself,
Just look how others do it;
If you want to understand others,
Look into your own heart

“Wouldst thou bestow some precious gift upon thy fellows, make thyself a noble man.”
Source: Aphorisms and Reflections (1901), p. 263

then let thy heart
From its present pathway part not!
Being everything which now thou art,
Be nothing which thou art not.
So with the world thy gentle ways,
Thy grace, thy more than beauty,
Shall be an endless theme of praise,
And love — a simple duty.
" To Frances S. Osgood http://www.readbookonline.net/readOnLine/595/" (1845).

“720. Be what thou wouldst seem to be.”
Jacula Prudentum (1651)

“Jove is not one half so merciless
As thou art to thyself.”
Sylphs
Poems (1851), Prometheus
Context: Jove is not one half so merciless
As thou art to thyself. But fare thee well;
Our love is all as stubborn as thy pride,
And swift as firm.

“Wouldst thou both eat thy cake and have it?”
The Size, reported in Bartlett's Familiar Quotations, 10th ed. (1919)