1. The primary reason that Descartes doubted so many things was

a. he had lost the will to go on living.

b. to find if there was any belief that was certain.

c. to show how foolish the ideas of his teachers were.

d. he was trying to attack religious belief.

2. Descartes doubted every one of his beliefs except those that were based on solid sense experience.

	a. True
	b. False