I define a Sign as anything which is so determined by something else, called its Object, and so determines an effect upon a person, which effect I ca….

A small error in the former will produce an enormous error in the latter..

The key, I suppose, has less to do with insight than with willingness, the former being relatively useless without the latter..

I have no writing habit. I work when I feel like it, and I work when I have to - mostly the latter..

For how is it possible, says that acute man, that when a concept is given me, I can go beyond it and connect with it another which is not contained i….

His subject is the "Origin of Species," & not the origin of Organization; & it seems a needless mischief to have opened the latter speculation at all..