Concentration is perfect attention
consciously directed to a given point of achievement
either objectively or subjectively.
-William Walker Atkinson, "A. P. Mukerji"

True concentration
is an unbroken thread of awareness.
-B. K. S. Iyengar

Concentration consists in freeing the attention from distractions.
and in focusing it on any thought in which one may be interested.
-Yogananda

Concentration is activity of mind
in the direction desired.
-Hazrat Inayat Khan

Confining the mind
within an ever-diminishing circle
is called concentration.
-Selvarajan Yesudian

Concentration means the power
of holding the mind to centre - to a focal point,
without allowing any other thoughts to touch you.
-William Walker Atkinson, "A. P. Mukerji"

Concentration is to bind consciousness to a single spot.
-Patanjali

Concentration upon a particular spot rules out other thoughts;
the mind is opened,
and the light shines within.
-Susan Sontag

Concentration brings light, or understanding,
by holding the mind to one point.
-Subramuniya

Concentration does not only mean "attention"
but penetration into things and processes.
-Hans-Ulrich Rieker

Concentration leads thought towards deeper vision.
-Hans-Ulrich Rieker

Concentration means gathering the essential;
to be concentrated means to be essential.
-Hans-Ulrich Rieker

Practice of concentration
makes the mind steady and one-pointed.
-Sivananda

Concentration is the key to all mind power.
-William Walker Atkinson, "A. P. Mukerji"

Concentration is the magic key
that opens the door to accomplishment.
-Michael Korda

The Ancients held that any idea will manifest itself externally
if one's attention is deeply concentrated upon it.
-Subba Row

Concentrate all your thoughts on the work at hand.
The sun's rays do not burn until brought to a focus.
-Alexander Graham Bell

Conscious attention
concentrates and even specializes mental energy
as the sun-glass concentrates and intensifies
the heat of the rays of the sun.
-William Walker Atkinson, "A. P. Mukerji"

You have seen what happens
when you hold a glass to the sun
and concentrate all the rays onto one spot, Zorba?
That spot soon catches fire, doesn't it? Why?
Because the sun's power has not been dispersed
but concentrated in one spot.
It is the same with men's minds.
You do miracles,
if you concentrate you mind on one thing and only one.
-Nikos Kazantzakis

Concentration is the secret of strength.
-Ralph Waldo Emerson

The one prudence in life
is concentration.
-Ralph Waldo Emerson

Beware of dissipating your powers;
strive constantly to concentrate them.
-Johann Wolfgang von Goethe

A man will be effective to the degree
he is able to concentrate.
-Lawrence LeShan

The mind must be capable of steady, consistent,
and one-pointed application
if it is to achieve anything of worth
in either the material or the spiritual life.
-Chinmayananda

Those who reach greatness on earth
reach it through concentration.
-The Upanishads

Concentration is not basically a mode of doing
but above all a mode of being.
-Lawrence LeShan

Concentration of spirit
makes on like a god.
-Zhong Li

Perfection by exclusive concentration.
-Bhavopanishad