Concentrate all your thoughts upon the work at hand. The sun’s rays do not burn until brought to a focus.
— Alexander Graham Bell
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.
— Elbert Hubbard
Concentration is a fine antidote to anxiety.
— Jack Nicklaus
It is those who concentrate on but one thing at a time who advance in this world.
— Og Mandino
If there is any one “secret” of effectiveness, it is concentration. Effective executives do first things first and they do one thing at a time. Concentration – that is, the courage to impose on time and events one’s own decision as to what really matters and comes first – is the executive’s only hope of becoming the master of time and events.
— Peter Drucker