There's no other time but the present. Anything else is a waste of time.

Amid the vastness of the things among which we live, the existence of nothingness holds the first place; its function extends over all things that have no existence, and its essence, as regards time, lies precisely between the past and the future, and has nothing in the present.

Don't waste your time away thinkin' 'bout yesterday's blues.

Let us try to recognize the precious nature of each day.

If you've got a today, don't wear it tomorrow. Tomorrow never happens. It's all the same day.

I don't think the human mind can comprehend the past and the future. They are both just illusions that can manipulate you into thinking there's some kind of change.