Jack of all trades, master of none Link to proverb.
Stitch in time saves nine - A.
Man who is his own lawyer has a fool for his client - A.
There's one born every minute Link to proverb.
It's all grist to the mill Link to proverb.
Love is blind Link to proverb.
Do unto others as you would have them do to you Link to proverb.

He who can does, he who cannot, teaches Link to proverb.
Takes one to know one - It.
Don't get mad, get even Link to proverb.
If at first you don't succeed try, try and try again.
You win some, you lose some.
The exception which proves the rule Link to proverb.
Between two stools one falls to the ground Link to proverb.