If you can keep your head when everyone around you is losing it

Loses it and blames it on you,

If you can trust yourself when everyone doubts you,

but also accept their doubts,

If you can wait and not get tired of waiting,

or being slandered, not dealing with lies,

or being hated, not to give place to hatred,

and yet not seeming too good, nor speaking too wisely;

If you can dream-and not make dreams your master;

If you can think-and not make thoughts your aim;

If you can meet with Triumph and Disaster

And treat those two impostors alike;

If you can bear to hear the truth you have spoken

Twisted by knaves to deceive fools,

Or see the things you gave your life for, broken,

and stoop down and build them up again with worn-out tools;

[...]

Yours is the Earth and all that is in it,

and-what is more-you will be a Man, my son.

Rudyard Kipling