You can gauge the limitations of a person's life by the size of the problems that get him or her down. You can measure the impact a person's life has by the size of the problems he or she solves. Jeff Olson

• perspective

This is the source.

If you isolate your problem from others, your chances of solving it are thin. Problems require wisdom, and wisdom requires perspective. Other people provide that perspective. Bill Russell

• problems
• wisdom
• perspective

There is neither happiness nor misery in the world; there is only the comparison of one state with another, nothing more. He who has felt the deepest grief is best able to experience supreme happiness. We must have felt what it is to die that we may appreciate the enjoyments of life. Alexandre Dumas

• happiness
• sadness
• perspective
• joy

This is the source.

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

• perspective

Faced with a choice between changing one's mind and proving there is no need to do so, almost everyone gets busy on the proof. John Kenneth Galbraith

• perspective

Life is lived forwards, but understood backwards. Soren Kierkegaard

• understanding
• perspective

An adventure is only an inconvenience rightly considered. An inconvenience is an adventure wrongly considered. Gilbert Keith Chesterton

• attitude
• perspective