1. What discovery was made about the substance being tested in the early 1950s?
(a) It shouldn't be used by people with anxiety or panic disorders.
(b) It was a natural by-product of processing the plant in certain ways.
(c) Its chemical makeup is similar to adrenalin.
(d) It permanently alters the user's brain in some ways.

2. What is the biggest difference between dreams and visions, according to the author?
(a) Visions can be induced, while dreams only happen randomly.
(b) Color is rare in dreams, but is always present in visions.
(c) Visions are often similar to religious experiences, but dreams usually aren't.
(d) Dreams can be had while awake or asleep, while visions only occur when one is awake.

3. What is the Dharma-body?
(a) Freedom from suffering, enlightenment and transcendence.
(b) Body, mind and spirit.
(c) Truth, joy and enlightenment.
(d) Truth, mind, and nature.

4. In what way does the second essay differ from the first?
(a) The second was written before the author's experimentation with drugs.
(b) The second doesn't recount any specific experience.
(c) The second essay has a darker, more sinister tone than the first.
(d) The second was originally a journal entry, and the author didn't intend to publish it.

5. What is the main reason for conducting the experiment in which the author participates?
(a) A need for more comprehensive information regarding the drug's long-term side effects.
(b) A need to understand why the drug has been used in religious and secular ceremonies.
(c) A need to understand the so-called "visionary" experiences associated with the drug.
(d) A need to catalogue the psychological effects of the drug on someone who already has a psychiatric illness.