"He turned to face her. The two vertical lines above his nose were deep clefts between red wales. "I don't give a damn about your honesty," he told her, trying to make himself speak calmly. "I don't care what kind of tricks you're up to, what your secrets are, but I've got to have something to show that you know what you're doing." "I do know. Please believe that I do, and that it's all for the best, and--" "Show me," he ordered. "I'm willing to help you. I've done what I could so far. If necessary I'll go ahead blindfolded, but I can't do it without more confidence in you than I've got now. You've got to convince me that you know what it's all about, that you're not simply fiddling around by guess and by God, hoping it'll come out all right somehow in the end."