It is much easier to change how you think by changing your behavior， than it is to change your behavior by changing how you think. Act out the change you seek.

"The best time to plant a tree was 20 years ago. The second best time is now."

I like to make beautiful things about difficult subjects.

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

I'm not afraid to fall in love. I'm afraid of the person I'll become when I'm in love.