Let us strive the more ...

Let us strive the more earnestly therefore to lengthen out our span of life-- life that is poured out like water and falls as the leaf-- if not by action (the means to which lie in another's power), yet in any case by study and research; and since it is not granted us to live long, let us transmit to posterity some memorial that we have at least lived.
 Pliny the Younger

Quotes from the same author

Glory ought to be the consequence, not the motive of our actions.
 Pliny the Younger
Objects which are usually the motives of our travels by land and by sea are often overlooked and neglected if they lie under our eye.
 Pliny the Younger