Youth is ever thus, eager to guess instead of waiting for certainties.

Should I guess instead that she's told you nothing at all?

Damiel chooses to become one of us: At last to guess instead of knowing.

If Darwin had described his doctrine as a guess instead of calling it an hypothesis, it would not have lived a year.

"I guess instead of borrowing you, he rented you," Debbie said, goaded into irreparable error.