Charles Sanders Peirce

Charles Sanders Peirce
Charles Sanders Peircewas an American philosopher, logician, mathematician, and scientist who is sometimes known as "the father of pragmatism". He was educated as a chemist and employed as a scientist for 30 years. Today he is appreciated largely for his contributions to logic, mathematics, philosophy, scientific methodology, and semiotics, and for his founding of pragmatism...
NationalityAmerican
ProfessionPhilosopher
Date of Birth10 September 1839
CountryUnited States of America
All the followers of science are fully persuaded that the processes of investigation, if only pushed far enough, will give one certain solution to each question to which they can be applied.... This great law is embodied in the conception of truth and reality. The opinion which is fated to be ultimately agreed to by all who investigate is what we mean by the truth, and the object represented in this opinion is the real.
It has never been in my power to study anything, mathematics, ethics, metaphysics, gravitation, thermodynamics, optics, chemistry, comparative anatomy, astronomy, psychology, phonetics, economics, the history of science, whist, men and women, wine, metrology, except as a study of semeiotic .
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 call its Interpretant, that the latter is thereby mediately determined by the former.
It is important to understand what I mean by semiosis . All dynamic action, or action of brute force, physical or psychical, either takes place between two subjects, whether they react equally upon each other, or one is agent and the other patient, entirely or partially, or at any rate is a resultant of such actions between pairs. But by "semiosis" I mean, on the contrary, an action, or influence, which is, or involves, a cooperation of three subjects, such as a sign, its object, and its interpretant, this tri-relative influence not being in any way resolvable into actions between pairs.
The consciousness of a general idea has a certain "unity of the ego" in it, which is identical when it passes from one mind to another. It is, therefore, quite analogous to a person, and indeed, a person is only a particular kind of general idea.
The idea does not belong to the soul; it is the soul that belongs to the idea.
Every man is fully satisfied that there is such a thing as truth, or he would not ask any question.
A hypothesis is something which looks as if it might be true and were true, and which is capable of verification or refutation by comparison with facts.
Mathematics is purely hypothetical: it produces nothing but conditional propositions.
The essence of belief is the establishment of a habit; and different beliefs are distinguished by the different modes of action to which they give rise.
A quality is something capable of being completely embodied. A law never can be embodied in its character as a law except by determining a habit. A quality is how something may or might have been. A law is how an endless future must continue to be.
... and it is probably that there is some secret here which remains to be discovered.
All the greatest achievements of mind have been beyond the power of unaided individuals.
The definition of definition is at bottom just what the maxim of pragmatism expresses.