are there any valid objections to ontology??

Answer 1

It is a branch of philosophy dealing with existence,why should be objections to it?

Answer 2

Ontology is a discipline, not a theory. One could only object to some particular theory of ontology. Did you have one in mind?

Answer 3

http://www.marxists.org/glossary/terms/o/n.htm#ontology

Ontology

In ancient times, Ontology referred to study of Being and fell into disrepute in modern times, but Edmund Husserl revived the idea of the study of different forms of Being and Phenomenology and Existentialism have given rise to a new concern with Ontology, the central problem of which is the age-old problem of Mind and Body. (See Rene Descartes.)

http://www.marxists.org/reference/subject/philosophy/works/at/adler.htm
Alfred Adler (1931)

What Life Should Mean to You

--------------------------------------------------------------------------------

Source: What Life Should mean to You (1933) publ. Unwin Books, 1932. Chapter 2 reproduced here.


--------------------------------------------------------------------------------

Chapter 2. Mind and Body


http://www.marxists.org/glossary/people/h/u.htm#husserl-edmund


Husserl, Edmund (1859-1938)

German philosopher, the founder of Phenomenology, a method for the description and analysis of consciousness, and aiming to resolve the opposition between Empiricism and Rationalism by indicating the origin of all philosophical and scientific systems in the interests and structures of experience.


http://www.marxists.org/reference/subject/philosophy/works/en/berkeley.htm

80. In the last place, you will say, what if we give up the cause of material Substance, and stand to it that Matter is an unknown Somewhat - neither substance nor accident, spirit nor idea, inert, thoughtless, indivisible, immoveable, unextended, existing in no place ? I or, say you, whatever may be urged against substance or occasion, or any other positive or relative notion of Matter, hath no place at all, so long as this negative definition of Matter is adhered to - I answer, you may, if so it shall seem good, use the word 'Matter' in the same sense as other men use 'nothing', and so make those terms convertible in your style. For, after all, this is what appears to me to be the result of that definition - the parts whereof when I consider with attention, either collectively or separate from each other, I do not find that there is any kind of effect or impression made on my mind different from what is excited by the term nothing."

I can't seem to find any objection, but I did notice Husserl was given credit for phenomenologies invention ...oops, my error... (hey, I was correct "German philosopher, the founder of Phenomenology") when Hegel was into it long before.

http://www.marxists.org/reference/archive/hegel/works/ol/ol_phen.htm

Descartes, Rene (1596-1650)

French mathematician (founder of analytical geometry), physiologist, physicist (vortex theory of origin of solar system) and philosopher; in philosophy a “dualist” - body and soul interacted via a special “organ” thus explaining how thought could “reflect” material reality; asserted that knowledge must be based (via deduction) on certainty, leading to search for rational beginning of knowledge which he solved with “I think, therefore I am” - the basic authentic certainty; founder of Rationalist school which opposed Reason to the dominance of theological thought of his time and was the historically important complement to Empiricism.

http://www.marxists.org/glossary/people/d/e.htm#descartes-rene