Think of the totality of all Being, and what a mite of it is yours; think of all Time, and the brief fleeting instant of it that is allotted to yourself; think of Destiny, and how puny a part of it you are.
Marcus Aurelius (AD 120 – 180), Meditations (5.24)
I also quite like the Gregory Hays’ translation of this:
Matter. How tiny your share of it.
Time. How brief and fleeting your allotment of it.
Fate. How small a role you play in it.