“The greatest and most important problems of life are all fundamentally insoluble. They can never be solved but only outgrown.”

“The greatest and most important problems of life cannot be solved. They can only be outgrown.”

“The greatest and most important problems of life are all in a certain sense insoluble…. They can never be solved, but only outgrown…. This ‘outgrowing’, as I formerly called it, on further experience was seen to consist in a new level of consciousness. Some higher or wider interest arose on the person’s horizon, and through this widening of view, the insoluble problem lost its urgency. It was not solved logically in its own terms, but faded out when confronted with a new and stronger life-tendency.”

“The conservation of natural resources is the fundamental problem. Unless we solve that problem it will avail us little to solve all others”

“sometimes the greatest of problems can be solved by a sweet smile”

“It is essential that anyone reading this book know at the outset that the author is apolitical. I was convinced in 1927 that humanity's most fundamental survival problems could never be solved by politics.”