Je was op zoek naar: by its own (Engels - Latijn)

by its own
suopte

of its own kind
sui generis

in its own right
in esse sui juris

a fire is nourished by its own ashes
alitur propriis ignis cineribus

excellence for its own sake
excellentia propter se

benedict has its own nd checkpoint
habet

in (one's/its) own right
suo jure/iure

if any one knows how to go its own way
comedite panem meum asinum

wisdom for its own sake and for teaching purposes
sapientia et sua et docendi causa

o priest don't judge a book by its cover
per operculum nec iudicatur liber

the heart has its own reason that even reason knows not
latin

virtue is it's own reward
virtutum omnium pretium in ipsis est

oscen, oscinis bird which gives omens by its cry; song-bird;
oscen

depondero, deponderare, deponderavi, deponderatus weigh down, press down by its weight;
deponderare

for by it the elders obtained a good report.
in hac enim testimonium consecuti sunt sene

i was wandering through the countries; of many people who saw it, but the truth of its own form as it had before.
the greek maiden errabat per terras; multos populos videbat, sed verum formam suam non habebat.

but he who knows what insanity is, is sane; whereas insanity can no more be sensible of its own existence, than blindness can see itself.
sanus est, qui scit quid sit insania, quippe insania scire se non potest, non magis quam caecitas se videre.

and whoso shall swear by the temple, sweareth by it, and by him that dwelleth therein.
et qui iuraverit in templo iurat in illo et in eo qui inhabitat in ips

a lying tongue hateth those that are afflicted by it; and a flattering mouth worketh ruin.
lingua fallax non amat veritatem et os lubricum operatur ruina