O that we had spent but one day in this world thoroughly well!

For each human being, time is a necessary resource. It can neither be ignored nor changed.

If we were immortal, we could legitimately postpone every action forever. [...] But in the face of death as absolute finis to our future and boundary to our possibilities, we are under the imperative of utilizing our lifetimes to the utmost, not letting the singular opportunities - whose finite sum constitutes the whole of life - pass by unused.

A whole lifetime was too short to bring out … the full flavour; to extract every ounce of pleasure, every shade of meaning …

No space of regret can make amends for one life's opportunity misused

Oh! captive, bound, and double-ironed," cried the phantom, "not to know, that ages of incessant labour, by immortal creatures, for this earth must pass into eternity before the good of which it is susceptible is all developed. Not to know that any Christian spirit working kindly in its little sphere, whatever it may be, will find its mortal life too short for its vast means of usefulness. Not to know that no space of regret can make amends for one life's opportunity misused!

The having originated a precaution which was already in course of execution, was a great relief to Miss Pross. The necessity of composing her appearance so that it should attract no special notice in the streets, was another relief. She looked at her watch, and it was twenty minutes past two. She had no time to lose, but must get ready at once.

Best and happiest of all, the Time before him was his own, to make amends in!

Don't say you don't have enough time. You have exactly the same number of hours per day that were given to Helen Keller, Pasteur, Michaelangelo, Mother Teresa, Leonardo da Vinci, Thomas Jefferson, and Albert Einstein.

Wisdom has a hundred eyes to see opportunities, courage has a hundred feet to seek opportunities, and strength has a hundred arms to seize opportunities.

By rationing in-person meetings, their stature is elevated to that of a rare treat. They become something to be savored, something special.

Wisdom is the power to put our time and our knowledge to the proper use