April 24th. A violent rainstorm forced us to embark before dawn. We left at two in the morning and had to abandon some books, which we could not find in the dark. The river runs straight from south to north, its banks are low and lined with thick jungle.

Missionaries have managed to rid the Indians of certain customs concerning birth, entering puberty and burying the dead; they have managed to stop them painting their skin or making incisions in their chins, noses and cheeks; they have banished the superstitious ideas that in many families are passed down mysteriously from father to son; but it was far easier to suppress practices and memories than it was to replace the old ideas with new ones. In the missions the Indian has a far more secure life than he had before. He is no longer a victim of the continuous struggle between man and the elements, and he leads a more monotonous and passive life than the wild Indian, but he is also less likely to animate his own spiritual development. His thinking has not increased with his contact with whites; he has remained estranged from the objects with which European civilization has enriched the Americas. All his acts seem dictated exclusively by wants of the moment. He is taciturn, without joy, introverted and, on the outside, serious and mysterious. Someone who has been but a short time in a mission could mistake his laziness and passivity for a meditative frame of mind.