You must not procrastinate. Rather, you should make preparations so that even if you did die tonight, you would have no regrets. If you develop an appreciation for the uncertainty and imminence of death, your sense of the importance of using your time wisely will get stronger and stronger.
Every historian loves the past or should do. If not, he has mistaken his vocation; but it is a short step from loving the past to regretting that it has ever changed. Conservatism is our greatest trade-risk; and we run psychoanalysts close in the belief that the only "normal" people are those who cause no trouble either to themselves or anybody else.
There is a longing for a return to a time without the need for choices, free of the regret at the inevitable loss that all choice (however wonderful) has entailed.
A dim antagonism gathered force within him and darkened his mind as a cloud against her disloyalty: and when it passed, cloudlike, leaving his mind serene and dutiful towards her again, he was made aware dimly and without regret of a first noiseless sundering of their lives.
Humans — who enslave, castrate, experiment on, and fillet other animals — have had an understandable penchant for pretending animals do not feel pain. A sharp distinction between humans and 'animals' is essential if we are to bend them to our will, make them work for us, wear them, eat them — without any disquieting tinges of guilt or regret. It is unseemly of us, who often behave so unfeelingly toward other animals, to contend that only humans can suffer. The behavior of other animals renders such pretensions specious. They are just too much like us.
Have we not all, amid life's petty strife, Some pure ideal of a noble life That once seemed possible? Did we not hear The flutter of its wings, and feel it near, And just within our reach? It was. And yet We lost it in this daily jar and fret, And now live idle in a vague regret; But still our place is kept, and it will wait, Ready for us to fill it, soon or late. No star is ever lost we once have seen, We always may be what we might have been.
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!