“Too much imagination and I’ll scare myself to death. Too little and I’ll get myself killed.”
Larry Niven book A World Out of Time
Source: A World Out of Time (1976), Chapter 4 The Norn, Section 1 (p. 95)

Jaybee Corbell travels three million years into the future to a homecoming on an earth in a transformed, relocated solar system
“Too much imagination and I’ll scare myself to death. Too little and I’ll get myself killed.”
Larry Niven book A World Out of Time
Source: A World Out of Time (1976), Chapter 4 The Norn, Section 1 (p. 95)
Larry Niven book A World Out of Time
Source: A World Out of Time (1976), Chapter 5 Stealing Youth, Section 3 (p. 126)
“He felt good. At worst he had found a brand-new way to die.”
Larry Niven book A World Out of Time
Source: A World Out of Time (1976), Chapter 2 Don Juan, Section 4 (p. 54)
“You’re insane. Imagine my amazement.”
Larry Niven book A World Out of Time
Source: A World Out of Time (1976), Chapter 2 Don Juan, Section 3 (p. 52)
Larry Niven book A World Out of Time
Source: A World Out of Time (1976), Chapter 2 Don Juan, Section 4 (p. 59)