Sonnet 94

"They that have power to hurt and will do none / That do not do the thing they most do show,"

Those who have the ability to hurt but choose not to, who do not use that power even though they look most certain of having it,

"Who, moving others, are themselves as stone / Unmoved, cold, and to temptation slow,"

Who, when moving others, are themselves still, unmoved, emotionally cold, and slow to temptation,

"They rightly do inherit heaven's graces / And husband nature's riches from expense;"

It is they who rightly inherit heaven's graces and spare nature's riches from ruin;

"They are the lords and owners of their faces / Others but stewards of their excellence."

They can control their facial expressions (thoughts and emotions), while others merely serve their emotions.

(A fool's wrath is presently known: but a prudent man covereth shame" (Proverbs 12:16).)

"The summer's flower is to the summer sweet / Though to itself it only live and die,"

The summer flower is sweet to the summer, though the flower lives and dies only for itself;

"But if that flower with base infection meet / The basest weed outbraves his dignity:"

But if that flower should develop an awful infection, the worst weed would outshine the flower in dignity:

"For sweetest things turn sourest by their deeds; / Lilies that fester smell far worse than weeds."

For it is those things that are sweetest that can become sourest by their deeds; lilies that rot smell far worse than weeds.