It is by attention that we gather and mass our mental energy upon the

critical and important points in our thinking
It is by attention that we gather and mass our mental energy upon the
critical and important points in our thinking. In the last chapter we
saw that consciousness is not distributed evenly over the whole field,
but 'piled up,' now on this object of thought, now on that, in obedience
to interest or necessity. _The concentration of the mind"s energy on one
object of thought is attention._