Ludwig Wittgenstein says: What do I know about God and the purpose of life? I know that this world exists. That I am placed in it like my eye in its visual field.That something about it is problematic, which we call meaning.
Albert Schweitzer says: All work that is worth anything is done in faith.
Subrahmanyan Chandrasekhar's brother says: Another thing that I want to write to you is in regard to your "strange feeling", as you put it, that all your books, all your hard work, when the books have been written and the work has been done, seem not to be yours, seem to be something extraneous, entities by themselves, separate and different from you. This is a mystic intimation, on the intellectual level, proclaimed by the Upanishads which in fact extends this sense of non-cognition even to one's body, senses and mind. (Note that the mind is included in the list.) The Gita also teaches that once you have performed your work, you should have no further concern with it and that it belongs to God. I see that after all Hindu blood runs in you.