中文有个成语“多多益善”，英文则说"The more the merrier."
the more the merrier spoken used to say that you are
happy for other people to join you in what you are doing:
'Do you mind if I bring Tony?' 'No, of course not.
The more the merrier.'
merry = happy 例如：圣诞快乐 - Merry Christmas!
A man can't have too many ties. - 男人的领带怎么也不算多。
A woman can't have too many shoes. - 女人的鞋子怎么多也不算多。
Many hands make light work.: If everyone helps with a large task, it will get done easily and quickly. - 人多好办事。
there is safety in numbers used to say that it is safer to be in a group than alone - 大家一起行动比较安全。
Two heads are better than one. - 两人联手比单干强。
英文中也有一些谚语是反对人多的：
Two's company, three's a crowd. ：a group of two people is comfortable; a group of three is not comfortable ... 两人正好，三人太挤。
Too many cooks spoil the broth.: When too many people work together on a project, the result is inferior. - 人多手杂易坏事。