Study the past if you would define the future.

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.

I don't carry the burden of the past or the madness of the future. I live in the present.

Lust for the future, treasure the past.

I try to learn from the past, but I plan for the future by focusing exclusively on the present. That's where the fun is.

I try not to look back. I'm looking forward. I'm worried more about what I'm going to do next week than I am what I did last week. There are too many things to do. Looking back is for everybody else.