You can't make an omelette without breaking eggs.
You can't take it with you when you die.
You can't tell a book by its cover.
You cannot have it both ways.
You don't get something for nothing.
You must live with a person to know a person. If you want to know me come and live with me. (Irish)
Young men may die, old men must.
You've got to do your own growing, no matter how tall your grandfather was. (Irish)
kaynak: