It must be the ground of all reasoning and inference that what is true of one thing will be true of its equivalent, and that under carefully ascertained conditions Nature repeats herself.


The Principles of Science: A Treatise on Logic and Scientific Method, Introduction (p. 2), Macmillan & Co Ltd. 1887

William Stanley Jevons Quotes

It must be the ground of all reasoning and inference that what is true of one thing will be true of its equivalent, and that under carefully...

It must be the ground of all reasoning and inference that what is true of one thing will be true of its equivalent, and that under carefully...

It must be the ground of all reasoning and inference that what is true of one thing will be true of its equivalent, and that under carefully...

It must be the ground of all reasoning and inference that what is true of one thing will be true of its equivalent, and that under carefully...