“Metaphysics is the science of the Absolute or the true nature of things.”

“It may be remarked incidentally that the recognition of the relational character of scientific objects completely eliminates an old metaphysical issue. One of the outstanding problems created by the rise of modern science was due to the fact that scientific definitions and descriptions are framed in terms of which qualities play no part. Qualities were wholly superfluous. As long as the idea persisted (an inheritance from Greek metaphysical science) that the business of knowledge is to penetrate into the inner being of objects, the existence of qualities like colors, sounds, etc., was embarrassing. The usual way of dealing with them is to declare that they are merely subjective, existing only in the consciousness of individual knowers. Given the old idea that the purpose of knowledge (represented at its best in science) is to penetrate into the heart of reality and reveal its "true" nature, the conclusion was a logical one. …The discovery of the nonscientific because of the empirically unverifiable and unnecessary character of absolute space, absolute motion, and absolute time gave the final coup de grâce to the traditional idea that solidity, mass, size, etc., are inherent possessions of ultimate individuals.”

John Dewey (1859–1952) American philosopher, psychologist, and educational reformer

“Physics is the Science of Matter; Metaphysics the Science of Mind — the Science of Being, apart from accidents and properties — Ontology.”

Horace Mann (1796–1859) American politician

“All natural philosophers, who wished to proceed mathematically in their work, have hence invariably (although unknown to themselves) made use of metaphysical principles, and must make use of such, it matters not how energetically they may otherwise repudiate any claim of metaphysics on their science.”

Immanuel Kant (1724–1804) German philosopher

“What can we say about metaphysical naturalism? Again, I want to make two points.
# My arguments for the existence of God show that metaphysical naturalism is not true. There is a personal, transcendent reality beyond the physical universe.
# Secondly, I think that metaphysical naturalism is so contrary to reason and experience as to be absurd.
In the following arguments, the first premise in every case is taken from [https://en.wikipedia.org/wiki/Alexander_Rosenberg Dr. Rosenberg]’s own book.”

William Lane Craig (1949) American Christian apologist and evangelist

“What can we say about metaphysical naturalism? Again, I want to make two points.
# My arguments for the existence of God show that metaphysical naturalism is not true. There is a personal, transcendent reality beyond the physical universe.
# Secondly, I think that metaphysical naturalism is so contrary to reason and experience as to be absurd.
In the following arguments, the first premise in every case is taken from [https://en.wikipedia.org/wiki/Alexander_Rosenberg Dr. Rosenberg]’s own book.”

William Lane Craig (1949) American Christian apologist and evangelist

“The true knowledge or science which exists nowhere but in the mind itself, has no other entity at all besides intelligibility; and therefore whatsoever is clearly intelligible, is absolutely true.”

Ralph Cudworth (1617–1688) English philosopher

“In a word, metaphysical naturalism is absurd. Notice that my argument is not that it is unappealing. Rather, it is that metaphysical naturalism flies in the face of reason and experience and is therefore untenable.”

William Lane Craig (1949) American Christian apologist and evangelist

“To arrive at understanding from being one's true self is called nature, and to arrive at being one's true self from understanding is called culture. He who is his true self has thereby understanding, and he who has understanding finds thereby his true self.
Only those who are their absolute true selves in the world can fulfil their own nature; only those who fulfil their own nature can fulfil the nature of others; only those who fulfil the nature of others can fulfil the nature of things; those who fulfil the nature of things are worthy to help Mother Nature in growing and sustaining life; and those who are worthy to help Mother Nature in growing and sustaining life are the equals of heaven and earth.”

Zisi (-481–-402 BC) Chinese philosopher

“In our science and philosophy, even, there is commonly no true and absolute account of things. The spirit of sect and bigotry has planted its hoof amid the stars. You have only to discuss the problem, whether the stars are inhabited or not, in order to discover it.”

Henry David Thoreau book Life Without Principle