It seems there are but two philosophical solutions [regarding killing oneself], either yes or no. This would be too easy. But allowance must be made for those who, without concluding, continue questioning. Here I am only slightly indulging in irony: this is the majority. I notice also those who answer "no" as if they thought "yes." As a matter of fact, if I accept the Nietzschean criterion, they think "yes" in one way or the other. On the other hand, it often happens that those who commit suicide were assured of the meaning of life. [...]
I'm not sure what the Nietzschean criterion is, nor am I sure whether it's an accepted thing or merely something I would be familiar with if I were very familiar with Nietzsche.