Before water generates steam, it must register 212 of heat; 200 will not do it. The water must boil to generate enough steam to move an engine. Lukewarm water will not run anything. Lukewarmness will not generate life's work.

If you chase two rabbits, both will escape.

Those who attain to any excellence commonly spend life in some single pursuit, for excellence is not often gained upon easier terms.

It seems essential, in relationships and all tasks, that we concentrate only on what is most significant and important

If our thoughts and hopes are elsewhere, it is impossible to set our faces steadily toward the work required of us.

I never could have done what I have done without the habits of punctuality, order, and diligence, without the determination to concentrate myself on one subject at a time...

Concentration is the factor that causes the great discrepancy between men and the results they achieve... the difference in their power of calling together all the rays of their ability and concentrating on one point.

The jack-of-all-trades seldom is good at any. Concentrate all of your efforts on one definite chief aim.

It's tough trying to keep your feet on the ground, your head above the clouds, your nose to the grindstone, your shoulder to the wheel, your finger on the pulse, your eye on the ball and your ear to the ground.

The giants of the race have been men of concentration, who have struck sledge-hammer blows in one place until they have accomplished their purpose. The successful men of today are men of one overmastering idea, one unwavering aim, men of single and intense purpose.