“If they are neither traceable in the Discourses nor verifiable by the Discipline, one must conclude thus: ‘Certainly, this is not the Blessed One’s utterance’“ The Buddha

Without approval and without scorn, but carefully studying the sentences word by word, one should trace them in the Discourses and verify them by the Discipline. If they are neither traceable in the Discourses nor verifiable by the Discipline, one must conclude thus: ‘Certainly, this is not the Blessed One’s utterance; this has been misunderstood by that bhikkhu — or by that community, or by those elders, or by that elder.’ In that way, bhikkhus, you should reject it.

This is from the Mahaparinibbana Sutta.

“‘As I am, so are these. As are these, so am I.’ Drawing the parallel to yourself, neither kill nor get others to kill.” The Buddha

This is a genuine quote from the Buddhist scriptures, said to have been uttered by the Buddha himself:

‘As I am, so are these.
As are these, so am I.’
Drawing the parallel to yourself,
neither kill nor get others to kill.

It’s from a text called the Nalaka Sutta, which is found in the Sutta Nipata)

“Conquer anger with non-anger. Conquer badness with goodness. Conquer meanness with generosity. Conquer dishonesty with truth.” The Buddha

From the Dhammapada, verse 223:

“Conquer anger with non-anger. Conquer badness with goodness.” The Buddha
“Conquer meanness with generosity. Conquer dishonesty with truth.” The Buddha