First Topic
Second Topic
Third Topic
Fourth Topic
NOTE: The ten Matters of this Fourth Topic are unconnected, in the same way that the four Topics of this Twenty-Sixth Letter are unconnected. So no connection should be sought. They were written exactly as they occurred to me. This is part of a letter to an important student of mine, consisting of the answers to five or six of his questions.
The First Matter
Second Matter
Third Matter
Fourth Matter
Fifth Matter
Sixth Matter
Seventh Matter
Eighth Matter
Ninth Matter
Tenth Matter
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