Where, one step broken, the great scale’s destroyed: From Nature’s chain whatever link you strike, Tenth or ten thousandth, breaks the chain alike. - Alexander Pope

Reason's whole pleasure, all the joys of Sense,
Lie in three words, Health, Peace, and Competence.
But Health consists with Temperance alone,
And Peace, oh Virtue! Peace is all thy own.

A man should never be ashamed to own that he has been in the wrong, which is but saying in other words that he is wiser today than he was yesterday.

So Man, who here seems principal alone,
Perhaps acts second to some sphere unknown.
Touches some wheel, or verges to some goal,
'This but a part we see, and not a whole.