Statement: “This world is neither good nor evil; each person manufactures a world for himself.”\nConclusions:\nI) Some people find this world quite good.\nII) Some people find this world quite bad.

Introduction / Context:
The statement asserts moral/experiential subjectivity: the world is not inherently good or evil; individuals construe it for themselves. We test whether positive and negative individual appraisals both follow.

Given Data / Assumptions:

• No absolute moral valence is assigned to the world.
• Perception is person-dependent (“manufactures a world”).

Concept / Approach:
If valuation is subjective, diverse evaluations—including “good” and “bad”—naturally occur across individuals. Therefore, I and II both follow as existential claims (“some people…”).

Step-by-Step Solution:
1) From subjectivity, infer existence of differing views.2) Positive appraisals (I) and negative appraisals (II) are both compatible and likely.

Verification / Alternative check:
The statement would be incoherent if only one valence were allowed; acknowledging both preserves the claim of subjectivity.

Why Other Options Are Wrong:
Selecting only one valence or neither contradicts the explicit subjectivity premise.

Common Pitfalls:
Reading the aphorism as denying all judgments, when it actually relocates judgment to the perceiver.

Final Answer:
Both conclusions follow.