“Our destiny is not to be perfect or to find that perfection in others. Our destiny is to accept our flaws and imperfections and strive to become a better person.”

Knowing Yourself: The True in the False (1996)

Source: Aphorisms and Reflections (1901), p. 161

Source: Cutting for Stone

Variant: Love isn't finding a perfect person. It's seeing an imperfect person perfectly.
Source: To Love and Be Loved

Book IX : Juris Doctor Johannes-Baptista Bottinius, Fisci et Rev. Cam. Apostol. Advocatus.
The Ring and the Book (1868-69)
Context: Forgive me this digression — that I stand
Entranced awhile at Law's first beam, outbreak
O' the business, when the Count's good angel bade
"Put up thy sword, born enemy to the ear,
"And let Law listen to thy difference!"
And Law does listen and compose the strife,
Settle the suit, how wisely and how well!
On our Pompilia, faultless to a fault,
Law bends a brow maternally severe,
Implies the worth of perfect chastity,
By fancying the flaw she cannot find.

As quoted in Voices of Liberation: Albert Lutuli (1993).
Resist apartheid! (1954)
Context: The laws and policies of white South Africa are no doubt inimical to this development. And so I call upon our people in all walks of life ministers of the Gospel of Christ, who died to save human dignity, teachers, professional men, business men; farmers and workers to rally round the congress at this hour to make our voice heard. We may be voteless, but we are not necessarily voiceless; it is our determination more than ever before in the life of our congress, to have our voice not only heard but heeded too. Through gatherings like this in all centres, large and small, we mean to mobilize our people to speak with this one voice and say to white South Africa: We have no designs to elbow anyone out of South Africa, but equally we have no intention whatsoever of abandoning our divine right, of ourselves determining our destiny according to the holy and perfect plan of our Creator. Apartheid can never be such a plan.