Necessary ( page 250 ).
Questions.
1. When is a thing properly said to be necessary? 2. What is the meaning of essential? How does it differ from indispensable? 3. With reference to what is a thing said to be requisite? How does requisite compare with essential and indispensable? 4. How do inevitable and unavoidable compare? To what kind of things are both these words applied? 5. How do needed and needful compare with necessary?
Examples.
As you grow ready for it, somewhere or other you will find what is —— for you in a book.
The ideas of space and time are called in philosophy —— ideas.