History respects revolutions; and yet, if a revolution is progressive, support it; if it is reactionary, resist it!

A bird without wings and a man without art are both condemned to wander in low places; they can never soar up to those unrivalled heights.

If tomorrow will be the end of the world, I will spend my today by looking at the pictures of my past!

Silent streets have many things to say.

When our star shines, someone else's fades away; when our dream is fulfilled, someone else's turns into a nightmare!

Your only real problem is mortality! No religion can solve this problem, but science can do!

There are too many things around us, preventing us from thinking well! To think well, sometimes we need a heavy fog!