Dhammapada Verse 1
Manopubbaṅgamā dhammā, manoseṭṭhā manomayā
Mind precedes all phenomena, mind is their chief, mind-made are they
Manasā ce paduṭṭhena, bhāsati vā karoti vā
If with a corrupted mind one speaks or acts
Tato naṃ dukkhamanveti, cakkaṃva vahato padaṃ
Suffering follows thereupon, as the wheel follows the hoof of the draught-ox