When the apple dropped over his head
Newton immediately came to know
‘What’ had hit his head,
‘When’ it had hit his head,
‘Where’ it had hit his head
‘Who’ had hit him with the apple
‘Why’ had he hit him so;
These were the questions
This was his imagination
His inquisitiveness, his surprise,
  his quest for Reality, his search for Truth
which finally led to the discovery of
Gravitation!