T.H. White, The Once and Future King:
"You many grow old and trembling in your anatomies, you may lie awake at night listening to the disorder of your veins, you may miss your only love, you may see the world about you devastated by evil lunatics, or know your honor trampled in the sewers of baser minds. There is only one thing for it then - to learn. Learn why the world wags and what wags it, That is the only thing which the mind can never exhaust, never alienate, never be tortured by, never fear or distrust, and never dream of regretting."
Mark Mansion, The Subtle Art of Not Giving a Fuck:
"Certainty is the enemy of Growth. ... Instead of striving for certainty, we should be in constant search of doubt: doubt about our own beliefs, doubt about our own feelings, doubt about what the future may hold for us unless we get out there and create it for ourselves. Instead of looking to be right all the time, we should be looking for how we’re wrong all the time. Because we are."
-- More quotes here soon --