No matter what people tell you, words and ideas can change the world.
The key to a happy life is not in avoiding problems, but in learning how to deal with them effectively.
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."
Mathematics is the music of reason.
“科学不仅是理性的门徒,也是浪漫和激情的门徒。”
The mind once enlightened cannot again become dark.
"A literatura é uma forma de resistência, de sobrevivência, de afirmação da vida."