Time has three steps: the future comes late, the present flies like an arrow, and the past is always static. Schiller
In the long river of infinite time, life is just a tiny wave. -Guo Xiaochuan
Life is too short to have free time, so we shouldn't spend a moment of free time reading worthless books. -Ruskin
Time that flies by, time that never returns, is a person's most precious wealth. If it is wasted, it is the greatest luxury. -Moaim