To improve is to change; to be perfect is to change often.
欲求新,则求变。欲求完美,求常变。
I don't know where the limits are, but I would like to go there.
I think the only free man can feel this kind of excitement, a free man step on a long journey, towards the uncertain future.
A mind conscious of its purity is attached to nothing， neither to the body nor to the soul.
In times of crisis, true leadership is measured by actions, not words.
"The past is always tense, the future perfect."