The fountain of content must spring up in the mind, and he who hath so little knowledge of human nature as to seek happiness by changing anything but… - Samuel Johnson

Let Observation with extensive View,
Survey Mankind, from China to Peru;
Remark each anxious Toil, each eager strife,
And watch the busy Scenes of crowded Life;
Then say how Hope and Fear, Desire and Hate,
O'erspread with Snares the clouded Maze of Fate,
Where wav'ring Man, betray'd by vent'rous Pride,
To tread the dreary Paths without a Guide;
As treach'rous Phantoms in the Mist delude,
Shuns fancied Ills, or chases airy Good.
How rarely Reason guides the stubborn Choice,
Rules the bold Hand, or prompts the suppliant Voice,
How Nations sink, by darling Schemes oppress'd,
When Vengeance listens to the Fool's Request.
Fate wings with ev'ry Wish th' afflictive Dart,
Each Gift of Nature, each Grace of Art,
With fatal Heat impetuous Courage glows,
With fatal Sweetness Elocution flows,
Impeachment stops the Speaker's pow'rful Breath,
And restless Fire precipitates on Death.

As the Spanish proverb says, "He, who would bring home the wealth of the Indies, must carry the wealth of the Indies with him." So it is in travelling; a man must carry knowledge with him, if he would bring home knowledge.

The happiest part of a man's life is what he passes lying awake in bed in the morning.