Isaac Casaubon, Letter to Claude Saumaise (DXLIII)
“I received your letters, and the ancient epigrams which you added. How can I show my gratitude for these? To be sure, you can guess how grateful I am from my almost shameless petition for them. So, I’m ashamed of myself for giving you so much vexation. I do not understand the method and aim of your studies. And so, believe me, I am concerned about you and your health – I think of you as a brother. I exceed you in age, but you have outstripped me with the miraculous gifts which instilled in me long ago a marvelous expectation for you. Just spare your intellect, have some concern for your health, enjoy the joy of your age and preserve yourself in this, your youth, so that you can when you are older complete those studies which cannot be completed except by you.
I seem to see you like Tantalus in the middle of the water, for you cannot enjoy all of the riches of the Palatine Library. I can sense your avidity from your letters, and I also know with what violent force you are driven on to your studies. This makes me fear for your little body. Otherwise, I will write at another time about the poems which you sent – now I am extremely busy. If you see the [???] of Bongars, you will know from it what my cares are. For I have set aside my Polybius for the meantime. Farewell, my dearest friend.”