You live as if you were destined to live forever, no thought of your frailty ever enters your head, of how much time has already gone by you take no heed. You squander time as if you drew from a full and abundant supply, so all the while that day which you bestow on some person or thing is perhaps your last. You have all the fears of mortals and all the desires of immortalsโฆ What foolish forgetfulness of mortality to defer wise resolutions to the fiftieth or sixtieth year, and to intend to begin life at a point to which few have attained.
Denis DiderotIt is not the man who is beside himself, but he who is cool and collected,--who is master of his countenance, of his voice, of his actions, of his gestures, of every part of his play,--who can work upon others at his pleasure.
Denis Diderot