Go
John Henry Newman preaches that religious truth cannot simply be passively received; it must be actively pursued and sincerely desired or it will remain obscure and inaccessible. He emphasizes that truth is complex, dispersed across history, and requires persistent effort, humility, and the willingness to change one’s life and habits to apprehend it. Newman also warns that without such seeking, people become susceptible to falsehoods and superficial beliefs, turning away from the transformative power of real truth. Ultimately, Newman insists that a living witness — someone who embodies truth in action — has far greater persuasive power than eloquent arguments alone, as truth is realized and made effective through personal integrity and lived example.
Attributed to Confucius by Henry David Thoreau in "Economy" from Walden, collected in Thoreau: Political Writings(1996), pp. 27-28. (This quote — "To know that we know what we know, and that we do not know what we do not know, that is true knowledge." — is often attributed to Nicholas Copernicus, but I've been unable to find a citation bearing this out.)
Go
To know that we know what we know, and that we do not know what we do not know, that is true knowledge.