I saw it myself. An endless succession of mongrels and malingerers, the laziest dropouts who fancied themselves explorers. He made his policy clear: he was not responsible for their food, their shelter, their safety, or their health. He didn't waste his time discouraging them because frankly there was no discouragement they could not withstand. All of the energy they could have put into their intelligence they had used to develop their tenacity. But what I quickly learned was that their tenacity was for going, not for staying. Once they were out on the trail they fell like flies. Some took a day, two days, others were gone in a matter of hours, and Dr. Rapp never stopped for them. He remained beautifully consistent: he was to work and he would continue to work. He would not ferry back the weak and the lame. They had chosen to get themselves in and they would simply have to figure the means to get themselves out. People were quick to accept these terms until they themselves were weak. Then they changed their tune entirely, then they said Dr. Rapp was heartless. They couldn't slander him as a scientist but they said no end of scurrilous things about him as a man. He hadn't rescued them! He hadn't been their father and mother! I will tell you, none of that troubled his sleep. If he had made them his responsibility, either by dissuading them from their ambitions or by bailing them out of their folly, the greatest botanist of our time would have been reduced to a babysitter. It would have been an incalculable blow to science, all in the name of saving the stupid.