The field of consciousness is tiny. It accepts only one problem at a time.
To do two things at once is to do neither.
I like to laugh, but on the court, it is my work. I try to smile, but it is so difficult. I concentrate on the ball, not on my face.
Successful minds work like a gimlet, to a single point.
A bird can roost but on one branch. A mouse can drink no more than its fill from a river.
Each man is capable of doing one thing well. If he attempts several, he will fail to achieve distinction in any.
This one thing I do ... I press toward the mark.
All good is gained by those whose thought and life are kept pointed close to one main thing, not scattered abroad upon a thousand.
The first law of success ... is concentration: to bend all the energies to one point, and to go directly to that point, looking neither to the right nor the left.
Give me a man who says this one thing I do, and not these fifty things I dabble in.
A single idea, if it is right, saves us the labor of an infinity of experiences.
One thought driven home is better than three left on base.
Purity of heart is to will one thing.
A man should remove not only unnecessary acts, but also unnecessary thoughts, for then superfluous activity will not follow.
No man will swim ashore and take his baggage with him.
Many people who wonder why they don't amount to more than they do have good stuff in them, and are energetic, persevering, and have ample opportunities. It is all a case of trimming the useless branches and throwing the whole force of power into the development of something that counts.
A great man is one who seizes the vital issue in a complex question, what we might call the jugular vein of the whole organism, and spends his energies upon that.
While the work or play is on ... don't constantly feel you ought to be doing the other.
When one is learning, one should not think of play; and when one is at play, one should not think of learning.
The immature mind hops from one thing to another; the mature mind seeks to follow through.