Gabriel Marcel said this quote

The key to the scientist's purpose is the idea that every phenomenon is the product of a certain given set of condition. In his laboratory he hopes to reconstitute the set of conditions, however complex they may be, which, once they are fully reconstituted, cannot fail to give rise to the phenomenon he is after, life. In other words he seeks to start off a mechanically fated chain-reaction; and of course, in enumerating the conditions that have made it possible for him to manufacture his phenomenon he systematically discounts the huge mental toils, the plodding, methodical research, of himself and others.Thus, by a singular contradiction, he succeeds in convincing himself and, of course, attempts to persuade others, that he has arrived at the origin of his phenomenon; he sets out to demonstrate that everything in the universe runs perfectly smoothly by itself, without any creative power at anytime intruding.

~ Gabriel Marcel

I know by my own experience how, from a stranger met by chance, there may come an irresistible appeal which overturns the habitual perspectives just as a gust of wind might tumble down the panels of a stage set - what had seemed near becomes infinitely remote and what had seemed distant seems to be close.

~ Gabriel Marcel

It is right that we be concerned with the scientific probity of metaphysics.

~ Gabriel Marcel

But however measurable, there is much more life in music than mathematics or logic ever dreamed of.

~ Gabriel Marcel