In ferndom all people are divided into two classes: the first, those who are in profound ignorance of these beautiful forms in the vegetable kingdom; the second, those who know almost everything about them and are full of enthusiasm, …
Rank-and-file Communists everywhere are led away on a senseless witch-hunt after 'Trotskyists'.
The clock keeps exact time.
The validity of the principle of transfinite induction for well-ordered sets enables us to carry out proofs by transfinite induction and definitions by transfinite induction. A proof by transfinite induction is a direct application of the principle when it is required to show that each element of a well-ordered set A has a property P. […] To understand the method of definition by transfinite induction some preparation is necessary.
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