You cannot teach an old dog new tricks.
More English Proverbs:
If you don't love yourself with passion, you'll love others with it. Passion is conserved.English
Let's cross that bridge when we come to it.
English
Let every man praise the bridge he goes over.
English
The bait hides the hook.
English
Cursing the weather is never good farming.
English
They who would be young when they are old must be old when they are young.
English