“It seems to me that the natural world is the greatest source of excitement; the greatest source of visual beauty; the greatest source of intellectual interest. It is the greatest source of so much in life that makes life worth living.”

“Satisfaction of one's curiosity is one of the greatest sources of happiness in life.

Linus Pauling”

“Make no mistake, it is precisely our moral authority that is our greatest source of strength”

“Today the greatest single source of wealth is between your ears.”

“Your most unhappy customers are your greatest source of learning.”

“… and that visibility which makes us most vulnerable is that which also is the source of our greatest strength.”

“Money is the source of the greatest vice, & that Nation which is most rich, is most wicked.”

“This life that has been given to us as a gift, as such a precious gift. To really try to understand it, really try to recognize it, is to me the greatest meditation. Through the media of this Knowledge we can tap into our inner sources that are so beautiful.”

“To like many people spontaneously and without effort is perhaps the greatest of all sources of personal happiness.”

“Friendship is the source of the greatest pleasures, and without friends even the most agreeable pursuits become tedious.”