You can’t teach an old dog new tricks.
More Traditional Proverbs:
Have your ear to the ground.Traditional
The dog in the haystack can't eat the hay himself and he won't let the horse eat it either
Traditional
We mustn't confuse mastery with mimicry, knowledge with superstitious ignorance.
Traditional
Those who have forsaken the killing of all those who are helpmates to all those who are a sanctuary to all those men are in the way of heaven.
Traditional
Life is like an onion. You peel it off layer by layer and sometimes you weep.
Traditional
Love this Earth as if you won't be here tomorrow show reverence for your Garden as if you will be here forever.
Traditional