"Natural knowledge has not forgone emotion. It has simply taken for itself new ground of emotion, under impulsion from…"

"It is difficult to get a hearing from busy men for even a great new truth."

"The brain is a mystery—it has been—and still will be. Not that we do not know many facts about it. The facts we know …"

"Natural science is a branch of knowledge by general consent not primarily based on the a priori. It […] observes and …"

"Today Nature looms larger than ever and includes more fully than ever ourselves. It is, if you will, a machine, but i…"

"The scientific journey has no end. It has only halting places—points at which the traveller can look round and survey."

"The 'motion' of an energy-system is its 'behaviour'. Various types of organization of system produce on that basis va…"

"The gap between 'the State' and 'a machine' is not so wide."

"The influence of mind on the doings of life makes mind an effective contribution to life. We can seize then how mind …"

"[M]an's life of all lives is the most completely and fully bound to earth because life's experience, wholly earthly, …"