"It is strange to reflect how much energy is thrown away in attempting to know the unknowable"

"First, I want to pay tribute to Diana myself. She was an exceptional and gifted human being. In good times and bad, she never lost her capacity to smile and laugh, nor to inspire others with her warmth and kindness. I admired and respected her - for her energy and commitment to others, and especially for her devotion to her two boys"

"Thirty percent of the Nation's energy comes off the gulf coast"

"The use of solar energy has not been opened up because the oil industry does not own the sun"

"Don't be afraid to fail. Don't waste energy trying to cover up failure. Learn from your failures and go on to the next challenge. It's OK to fail. If you're not failing, you're not growing"

"Life begets life. Energy creates energy. It is by spending oneself that one becomes rich"

"Oh, the miraculous energy that flows between two people who care enough to get beyond surfaces and games, who are willing to take the risks of being totally open, of listening, of responding with the whole heart. How much we can do for each other"

"It is the lot of man to share in the deeper aspirations of the universe around him and to share his own destiny as well as that of the universe, now by adjusting himself to its forces, now by putting the whole of his energy to his own ends and purposes"

"If you're puzzled by what dark energy is, you're in good company"

"Nuclear power will help provide the electricity that our growing economy needs without increasing emissions. This is truly an environmentally responsible source of energy"

"A leader has the vision and conviction that a dream can be achieved. He inspires the power and energy to get it done"