"I feel I shall find the truth on my deathbed and be surrounded by people too stupid to understand—fussing about medicines instead of searching for wisdom."

"It is not uncommon for doctors to be asked by married couples of some years' standing for advice as to how to get children, and to find on examination that the couples have not known how to perform in…"

"The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt."

"The time has already come when each country needs a considered national policy about what size of population, whether larger or smaller than at present or the same, is most expedient. And having settl…"

"It is undesirable to believe a proposition when there is no ground whatever for supposing it true."