Arthur Eddington | The problem of the source of a star’s energy

"The problem of the source of a star’s energy will be considered, by a process of exhaustion we are driven to conclude that the only possible source of a star’s energy is subatomic yet it must be confessed that the only hypothesis shows little disposition to accommodate itself to the detailed requirements of observation, and a critic might count up a large number of fatal objections."

Arthur Eddington