Free will and responsibility

Albert Einstein - Theoretical physicist

The definition of insanity is doing the same thing over and over again, but expecting different results. 

Martin Luther King, Jr. - American Christian minister and activist

The first question which the priest and the Levite asked was: 'If I stop to help this man, what will happen to me?' But... the good Samaritan reversed the question: 'If I do not stop to help this man, what will happen to him?

Pope Francis - First Jesuit pope

If we see someone who needs help, do we stop? There is so much suffering and poverty, and a great need for good Samaritans.

Abraham Lincoln - American statesman and lawyer who served as the 16th president of the United States

People are about as happy as they make up their minds to be.