NATURE CAN PRODUCE WHATEVER CAN ARISE FROM HABIT
 

"This instinct [the inductive or causal-reasoning instinct] ... arises from past observation and experience; but can any one give the ultimate reason why past experience and observation produces such an effect, any more than why nature alone should produce it? Nature may certainly produce whatever can arise from habit: Nay, habit is nothing but one of the principles of nature, and derives all its force from that origin." (David Hume, A Treatise of Human Nature, Book I, Part III, Sec. 16.)
 

[Spelling and punctuation has been modernized in the above passage from Hume.]