Lucretius On the Nature of Things

Lucretius explains the difficulty of explaining Greek concepts in Latin verse:

And well do I know Greek science is obscure and difficult to explain in Latin verse, above all when I must work with coined words where Latin is lacking and the concept new. But your great goodness and the hoped-for-joy of your sweet friendship bid me bear all toil, and keep me awake at work through cloudless night seeking not only words but verses too, to be bright shining lights before your mind, that you may see deep into hidden truth.