No mortal man, moreover is wise at all moments. — Pliny the Elder. 1st-century Roman military commander and writer
To conclude, all other living creatures live orderly and well, after their own kind: we see them flock and gather together, and ready to make head and stand against all others of a contrary kind: the lions as fell and savage as they be, fight not with one another: serpents sting not serpents, nor bite one another with their venomous teeth: nay the very monsters and huge fishes of the sea, war not amongst themselves in their own kind: but believe me, man at man's hand receiveth most harm and mischief.
In comparing various authors with one another, I have discovered that some of the gravest and latest writers have transcribed, word for word, from former works, without making acknowledgment.
Indeed, what is there that does not appear marvelous when it comes to our knowledge for the first time? How many things, too, are looked upon as quite impossible until they have been actually effected?