Alternative form of you can't put an old head on young shoulders

Young people inevitably lack the experience and wisdom which come with age.

One should not carry out an action if they are unwilling to handle the consequences.

If one does not know about a problem or a misdeed, one will not be able to render oneself unhappy by worrying about it; often used to justify not informing an individual about a problem or misdeed.

One is able to express thoughts, criticism, or insults towards others, but cannot accept being on the receiving end of the same treatment.

When you don't have all the facts or have a brilliant explanation, you can often convince people or win an argument by using bullshit.

Alternative form of one can't hold two watermelons in one hand

You can show someone how to do something, but you can't make them do it.

Alternative form of you can lead a horse to water, but you can't make it drink

(ethnic slur, offensive) Black people, in the view of racists, behave badly regardless of their whereabouts or socialization.