Isaac Newton was a great scientist. He was born in 1642, and died in 1727. He discovered the law of gravitation. It was the falling of an apple in his garden that set him thinking. He was trying to find why the earth went round the sun, and the moon round the earth. He asked himself, “Why does an apple fall to the earth?” This led him to his great discovery. Newton also found out that white light is made up of seven colours. We see the colours in a rainbow. He saw a Very leaned man. But he was very humble. Shortly before his death he said, “I seem to have been only like a boy playing on the seashore, and amusing myself in now and then finding a smooth pebble or pretty shell. The great ocean of truth lay all undiscovered before me.”