Wisdom does not show itself so much in precept as in life - in firmness of mind and a mastery of appetite. It teaches us to do as well as to talk and to make our words and actions all of a color.

Roman civilization had achieved within the bounds of its technology relatively as great a mastery of time and space as we have achieved today.

Only one who devotes himself to a cause with his whole strength and soul can be a true master. For this reason mastery demands all of a person.

We need to tap the resource of current and retiring science and math professionals that have both content mastery and the practical experience to serve as effective teachers.

Science is not about control. It is about cultivating a perpetual condition of wonder in the face of something that forever grows one step richer and subtler than our latest theory about it. It is about reverence not mastery.

The central task of science is to arrive stage by stage at a clearer comprehension of nature but this does not at all mean as it is sometimes claimed to mean a search for mastery over nature.

An artist must possess Nature. He must identify himself with her rhythm by efforts that will prepare the mastery which will later enable him to express himself in his own language.

The mastery of nature is vainly believed to be an adequate substitute for self mastery.

We talk of our mastery of nature which sounds very grand but the fact is we respectfully adapt ourselves first to her ways.

The happiness of a man in this life does not consist in the absence but in the mastery of his passions.

For good or for ill air mastery is today the supreme expression of military power and fleets and armies however vital and important must accept a subordinate rank.

No doubt the White House thinks the American people know Obama's story. But since the Inauguration we've seen only the president's present: his perfect family his Ivy League elegance his effortless mastery of complex issues. We never see him sweat. And we forget that he ever had to struggle.

If fear is cultivated it will become stronger if faith is cultivated it will achieve mastery.

Courage is resistance to fear mastery of fear not absence of fear.