It is only when I dally with what I am about, look back and aside, instead of keeping my eyes straight forward, that I feel these cold sinkings of the heart.
If there is anything that can be called genius, it consists chiefly in the ability to give that attention to a subject which keeps it steadily in the mind, till we have surveyed it accurately on all sides.
The secret of concentration is the secret of self-discovery. You reach inside yourself to discover your personal resources, and what it takes to match them to the challenge.
No horse gets anywhere until he is harnessed. No steam or gas ever drives anything until it is confined. No Niagara is ever turned into light and power until it is tunneled. No life ever grows great until it is focused, dedicated, disciplined.
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.
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.
If you want to hit a bird on the wing you must have all your will in focus, you must not be thinking about yourself and, equally, you must not be thinking about your neighbor: you must be living in your eye on that bird. Every achievement is a bird on the wing.
The difference in men does not lie in the size of their hands, nor in the perfection of their bodies, but in this one sublime ability of concentration: to throw the weight with the blow, to live an eternity in an hour.
There is time enough for everything in the course of the day if you do but one thing at once; but there is not time enough in the year if you will do two things at a time.
I can't concentrate on golf or bowling. Those bowling pins aren't going to hurt me. I can concentrate in the ring because someone is trying to kill me.