Time has been studied by philosophers and scientists for 2,500 years. Astronomer Carl Sagan had it right when he said that time is “resistant to simple definition.” Lots of us think we know what time is, but it is hard to define. You can not literally see or touch time, but you can see its effects. The evidence that we are moving through time is found in everything – our bodies age, buildings weather and crumble, trees grow. Most of us feel the pressure of time as we are pushed to meet deadlines and make appointments. Our lives are often dictated by what time we need to be somewhere.
Here is the list of the time quotations of many famous authors:
“In daily life we divide time into three parts: past, present, and future. The grammatical structure of language revolves around this fundamental distinction. Reality is associated with the present moment. The past we think of having slipped out of existence, whereas the future is even more shadowy, its details still unformed. In this simple picture, the “now” of our conscious awareness glides steadily onward, transforming events that were once in the unformed future into the concrete but fleeting reality of the present, and thence relegating them to the fixed past.” (Paul Davies, “That Mysterious Flow”)
“Time is nature’s way of keeping everything from happening at once”. This quote, attributed variously to Einstein, John Archibald Wheeler, Woody Allen, says that time is what separates cause and effect.
“Time is like the wind, it lifts the light and leaves the heavy.” (Doménico Cieri Estrada)