Apple

What is an apple? To Sir Isaac Newton, it is the key to a much bigger scientific world. Before the magic apple fell on his head, he had been thinking about gravitation theory for a long time. So we can call the apple catalyst in his way of establishing his world. Still there are many apples that fall off the trees every day, but only this one can be called the lucky apple. Why? The story about the discovering benzene structure may provide the answer. One night, F·A·Kekule, the great German scientist fell asleep while he was thinking of the structure of benzene, a newly discovered liquid from the coal. Suddenly a snake hold its tail and began to turn in a circle.Kekule then woke up suddenly in his dream and drew the structure of benzene on the paper. To him, the snake turned out to be the lucky apple.

So we can say that the lucky apple is always ready for those who are always ready to catch it. What and where is your lucky apple,my friend?