Noun
Internal or inherent power; capacity of acting, operating, or producing an effect, whether exerted or not; as, men possessing energies may suffer them to lie inactive.
Power efficiently and forcibly exerted; vigorous or effectual operation; as, the energy of a magistrate.
Strength of expression; force of utterance; power to impress the mind and arouse the feelings; life; spirit; -- said of speech, language, words, style; as, a style full of energy.
Capacity for performing work.
Source: Webster's dictionaryThe energy of the mind is the essence of life. Aristotle
Love is energy of life. Robert Browning
Nobody realizes that some people expend tremendous energy merely to be normal. Albert Camus
The release of atomic energy has not created a new problem. It has merely made more urgent the necessity of solving an existing one. Albert Einstein
Life begets life. Energy creates energy. It is by spending oneself that one becomes rich. Sarah Bernhardt
Energy is Eternal Delight. (William Blake) English Proverb