--------Si mutabile pectus
Est tibi, consiliis, non curribus, utere nostris;
Dum potes, et solidis etiam num sedibus adstas,
Dumque male optatos nondum premis inscius axes.
OVID. Met. ii. 143.
--------Th' attempt forsake,
And not my chariot but my counsel take;
While yet securely on the earth you stand;
Nor touch the horses with too rash a hand. ADDISON.