“When the mind is unguarded, bodily action is unguarded; speech also is unguarded; thought also is unguarded. When the mind is guarded, bodily action is guarded; speech also is guarded; and thought also is guarded. “‘
“By mind the world is led, by mind is drawn:
And all men own the sovereignty of mind.”
“If one speaks or acts with a wicked mind, pain follows one as the wheel, the hoof of the draught-ox. “
“If one speaks or acts with a pure mind, happiness follows one as the shadow that never departs. “
One can read about life of Buddha and Dhammapada by clicking the below two links
Life of Buddha
The Dhammapada