I esteem myself happy to have as great an ally as you in my search for truth. I will read your work … all the more willingly because I have for many years been a...

In describing the honourable mission I charged him with, M. Pernety informed me that he made my name known to you. This leads me to confess that I am not as completely unknown to you...

You must come to Copenhagen to work with us. We like people who can actually perform thought experiments!

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