The human spirit glows from that small inner doubt whether we are right, while those who believe with complete certainty that they possess the right are dark inside and darken the world outside with cruelty, pain and injustice.  

Saul Alinsky (Rules for Radicals)

It is precisely in a broken age that we need mystery and a reawakened  sense of wonder: need them in order to be whole again.

Ben Okri (A way of being free)

Life is never made unbearable by circumstances, but only by lack of 
meaning and purpose.

Viktor Frankl (Man’s Search for Meaning)

The slenderest knowledge that may be obtained of the highest things is more desirable than the most certain knowledge of lesser things.

Saint Thomas Aquinas (in Paths to the Divine: Ancient and Indian by Vensus A George)

The real voyage of discovery consists not in seeking new landscapes, but in having new eyes.

Marcel Proust (La Prisonniere)