It's sad if you waste your time. Because your youth can only last a little time-a very short time. Oscar Wilde

No one does not cherish his life, but few people cherish his time. -Liang Shiqiu

People who never waste time have no time to complain about lack of time. Jefferson

Advanced and complex labor is the performance of such a kind of labor force, which needs higher education expenses than ordinary labor force, and its production needs to spend more labor time. Therefore, it has high value. Marx

Taking time to think is the most time-saving thing. -Cousin

I used to think I was an astronaut. It took me a long time to realize that I was just a lonely person dancing between planets. -Former Soviet cosmonaut