“One of the effects, among others, of modern science has been that of mortally wounding religion by posing in concrete terms problems which esoterism alone can resolve and which remain unresolved because esoterism is not heeded and is heeded less now than ever. Faced by these new problems, religion is disarmed, and it borrows clumsily and gropingly the arguments of the enemy, and this obliges it to falsify its own perspective imperceptibly and disavow itself more and more; its doctrine is certainly not affected, but false opinions borrowed from its repudiators corrode it insidiously "from within", as witnessed by modernist exegesis, the demagogic leveling of the liturgy, Teilhardian Darwinism or the "sacred art" of surrealist and "abstract" persuasion.”

Autobiography (1936; 1949; 1958)
Context: Organised religion allying itself to theology and often more concerned with its vested interests than with the things of the spirit encourages a temper which is the very opposite of science. It produces narrowness and intolerance, credulity and superstition, emotionalism and irrationalism. It tends to close and limit the mind of man and to produce a temper of a dependent, unfree person.
Even if God did not exist, it would be necessary to invent Him, so Voltaire, said … perhaps that is true, and indeed the mind of man has always been trying to fashion some such mental image or conception which grew with the mind's growth. But there is something also in the reverse proposition: even if God exist, it may be desirable not to look up to Him or to rely upon Him. Too much dependence on supernatural forces may lead, and has often led, to loss of self-reliance in man, and to a blunting of his capacity and creative ability. And yet some faith seems necessary in things of the spirit which are beyond the scope of our physical world, some reliance on moral, spiritual, and idealistic conceptions, or else we have no anchorage, no objectives or purpose in life. Whether we believe in God or not, it is impossible not to believe in something, whether we call it a creative life-giving force, or vital energy inherent in matter which gives it its capacity for self-movement and change and growth, or by some other name, something that is as real, though elusive, as life is real when contrasted with death. <!-- p. 524 (1946)

Conversation with George MacBeth on Third Programme (BBC) (1 February 1967), published in The New S.F. (1969), edited by Langdon Jones
Context: I think the new science fiction, which other people apart from myself are now beginning to write, is introverted, possibly pessimistic rather than optimistic, much less certain of its own territory. There's a tremendous confidence that radiates through all modern American science fiction of the period 1930 to 1960; the certainty that science and technology can solve all problems. This is not the dominant form of science fiction now. I think science fiction is becoming something much more speculative, much less convinced about the magic of science and the moral authority of science. There's far more caution on the part of the new writers than there was.

Answer from Pasteur to his disciple Elie Metchnikoff when was questioned whether his approach to spontaneous generation was bound to a religious ideal. According to Patrice Debré's Luis Pasteur, 2000 https://books.google.co.uk/books?id=RzOcl-FLw30C&lpg=PP1&pg=PA176#v=onepage&q&f=false,, p. 176.
Disputed

p.5.

Page 180
Faith and Politics (2006)

Source: From Bethlehem to Calvary (1937), Chapter One

Sucesivos Escolios a un Texto Implícito (1992)

Lectures on Philosophy of Religion, Volume 1 (1827)

Mathematical Problems (1900)
Context: History teaches the continuity of the development of science. We know that every age has its own problems, which the following age either solves or casts aside as profitless and replaces by new ones. If we would obtain an idea of the probable development of mathematical knowledge in the immediate future, we must let the unsettled questions pass before our minds and look over the problems which the science of today sets and whose solution we expect from the future. To such a review of problems the present day, lying at the meeting of the centuries, seems to me well adapted. For the close of a great epoch not only invites us to look back into the past but also directs our thoughts to the unknown future.