That part too can be quieted. Above that is the human reason which constructs conceptions that build up into ideas. Silence enters the mind as and when these activities recede. Current thoughts, conversion of knowledge into useful ideas and abstract thinking must all stop for the Silence to enter the mind. Beneath all these high faculties lies the chattering physical mind that never stops running, and uses the mouth to express itself.
Curiosity kindles our thoughts.
A desire to understand a new phenomenon engages the thought. A young man suddenly faced with the prospect of self-employment will think, consider, and evaluate the opportunity. Till the mind fully understands, thinking does not stop. Every time something new present itself before the mind, the mind gets active. Its activity is thinking.