Men give away nothing so liberally as their advice.
Advice is like kissing: it costs nothing and is a pleasant thing to do.
We are never so generous as when giving advice.
We give nothing so freely as advice.
Advice is cheap; you can take it from me.
Advice is given freely because so much of it is worthless.
It is not unprofessional to give free legal advice, but advertising that the first visit will be free is a bit like a fox telling chickens he will not bite them until they cross the threshold of the hen house.
Your most expensive advice is the free advice you receive from your financially struggling friends and relatives.
Good places for aphorisms: in fortune cookies, on bumper stickers, and on banners flying over the Palace of Free Advice.
The one thing people are the most liberal with, is their advice.
I realize that advice is worth what it costs--that is, nothing.