"Dynamics of Faith" by Paul Tillich

Paperback and Kindle edition via Amazon.

• "There is hardly a word in the religious language, both theological and popular, which is subject to more misunderstanding, distortions and questionable definitions that the word "faith." It belongs to those terms which need healing before they can be used to the healing of men."
• "Today the term "faith" is more productive of disease than of health. It confuses, misleads, creates alternately skepticism and fanaticism, intellectual resistance and emotional surrender, rejection of genuine religion and subjection to substitutes."
• "there is as yet no substitute expressing the reality to which the term "faith"points. So, for the time being, the only way of dealing with the problem is to try to reinterpret"
• "Faith is the state of being ultimately concerned: the dynamics of faith are the dynamics of man's ultimate concern."
  

"The Future of an Illusion" by Sigmund Freud

The Future of an Illusion (by Sigmund Freud) - the Kindle edition.

•  "The one person this publication may injure is myself."

•  "It is possible that cultural development lie ahead of us in which the satisfaction of yet other wishes, which are entirely permissible today, will appear just as unacceptable as cannibalism is today." 

• "It goes without saying that a civilization which leaves so large a number of its participants unsatisfied and drives them into revolt neither has nor deserves prospect of a lasting experience." 

• "scientific work is the only road which can lead us to a knowledge of reality outside ourselves. It is once again merely an illusion to expect anything from intuition and introspection; they can give us nothing but particulars about our own mental life, which are hard to interpret 

• "Civilization has little to fear from educated people and brainworkers."

• "But surely infantilism is destined to be surmounted. Men cannot remain children for ever; they must in the end go out into the 'hostile life'. We may call this 'education to reality'."

• "The voice of the intellect is a soft one, but it does not rest till it has gained a hearing." 

• "in the long run nothing can withstand reason and experience" 

• "No, our science is no illusion. But an illusion would be to suppose that what science cannot give us we can get elsewhere."

"Cat's Cradle" by Kurt Vonnegut

Kindle edition and paperback.

• "People have to talk about something just to keep their voice boxes in working order, so they'll have good voice boxes in case there's ever anything really meaningful to say."
• "The brainless serenity of charwomen and janitors working late at night came over us. In a messy world we were at least making our little corner clean."
• "Americans are forever searching for love in forms it never takes, in places it can never be."
• "You're looking at the world's champion mistakemaker"
• "All the true things I am about to tell you are shameless lies."
• "Anyone unable to understand how a useful religion can be found on lies, will not understant this book either."