"On Stupidity"

  "Stupidity is a more dangerous enemy of the good than malice." -- Dietrich Bonhoeffer (Letters and papers From Prison)

Conflict/Peace

"Peace is not the absence of conflict, but the ability to cope with conflict by peaceful means." -- Ronald Reagan 

Contentment

 "Give a man everything he wants and at that moment, everything will not be everything." -- Immanuel Kant

Truth stages

 "Truth passes through three stages.  First, it is ridiculed.  Second, it is violently opposed.  Third, it is accepted as being self-evident." -- Arthur Schopenhauer

Doors of Perception

 "If the doors of perception were cleansed every thing would appear to man as it is, infinite. For man has closed himself up, till he sees all things thro' narrow chinks of his cavern." -- William Blake, The Marriage of Heaven and Hell.

Don't try to be subtle or clever

 "If you have an important point to make, don't try to be subtle or clever.  Use a pile driver.  Hit it once.  Then come back and hit it again." -- Winston Churchill

Past / Future

 "If we want to create a different future, we must have the courage to look at the past." - Dan B. Allender