Concentration (n.) is the stopping off decisively our miscellaneous activity, and concentrating our force on one or a few points; as the gardener, by severe pruning, forces the sap of the tree into one or two vigorous limbs.
Concentration (n.) is the one prudence in life; the one evil is dissipation.
Concentration (n.) is the secret of strength in politics, in war, in trade, in short, in all management of human affairs.
Concentration (n.) is the secret of strength in all the management of human affairs.
Hyperattention (n.) is switching focus rapidly among different tasks, preferring multiple information streams, seeking a high level of stimulation, and having a low tolerance for boredom.