"It would truly be a fine thing if men suffered themselves to be guided by reason, that they should acquiesce in the true remonstrances addressed to them by the writings of the learned and the advice of friends. But the greater part are so disposed that the words which enter by one ear do incontinently go out of the other, and begin again by following the custom. The best teacher one can have is necessity."
Source : "Sadie Frost opens her heart on love, motherhood, her ex-husbands and those crazy Primrose Hill Days" by Dean Piper, www.mirror.co.uk. April 29, 2012.