“After a long analysis of Robson’s suicide, we concluded that it could only be considered philosophical in an arithmetical sense of the term: he, being about to cause an increase of one in the human population, had decided it was his ethical duty to keep the planet’s numbers constant.”

“Human population growth is probably the single most serious long-term threat to survival. We're in for a major disaster if it isn't curbed... We have no option. If it isn't controlled voluntarily, it will be controlled involuntarily by an increase in disease, starvation and war.”

“And only after he said it did he realize that among the countless suicides he could remember, this was the first with cyanide that had not been caused by the sufferings of love. Then something changed in the tone of his voice.“And when you do find one, observe with care,” he said to the intern:“they almost always have crystals in their heart.”

“In the letter he left for the coroner he had explained his reasoning (for suicide): that life is a gift bestowed without anyone asking for it; that the thinking person has a philosophical duty to examine both the nature of life and the conditions it comes with; and that if this person decides to renounce the gift no one asks for, it is the moral and human duty to act on the consequences of that decision. ... Alex showed me a clipping from the Cambridge Evening News. 'Tragic Death of "Promising" Young Man.' ... The verdict of the coroner's inquest had been that Adrian Flinn (22) had killed himself 'while the balance of his mind was disturbed.' ... The law, and society, and religion all said it was impossible to be sane, healthy, and kill yourself. Perhaps those authorities feared that the suicide's reasoning might impugn the nature and value of life as organised by the state which paid the coroner?”

“So long as there is death there will be sorrow, and so long as there is sorrow it can be no part of the duty of human beings to increase its amount, in spite of the fact that a few rare spirits know how to transmute it.”

“One of the only coherent philosophical positions is revolt. It is a constant confrontation between man and his obscurity. It is not aspiration, for it is devoid of hope. We cannot influence fate: we will all die and our individual beings will be obliterated. But we have a choice in how we live. A living man can be enslaved and reduced to the historic condition of an object. But if he dies in refusing to be enslaved, he reaffirms the existence of another kind of human nature.”