science could also be said with the money. but when we accept the science, we do not accept money in cash. we receive is money in the form of investment. a useful investment for the future.

science is invaluable. but science was not an item that we can get it instantly. to get the science, we must face the hard to learn, difficulty thinking, and weight of memorization.

science when we taste bitter, sweet when swallowed. people who never feel the bitterness of obtaining knowledge, then he would not get the sweet fruit of knowledge.

science is a lamp. lamp that can illuminate the darkness of the world.