The only books in this library that I do not recommend for reading are unhealthy in tone.
The bound books are all well written.
All the romances are healthy in tone.
I do not recommend you to read any of the unbound books.
All the romances in this library are well written.

The following sorites are taken from Lewis Carroll’s Symbolic Logic. All are valid. Rewrite each sorites in standard form, using letters to represent the terms and reducing the number of terms whenever necessary. Then use Venn diagrams or the rules method to prove each one valid.