(informal) If you provoke somebody, you can expect an aggressive reaction.

(colloquial, rhetorical question) Said to express surprise due to a perceived drastic change of behaviour of a person.

Alternative form of what doesn't kill you makes you stronger

Hardship builds moral character.

One's position in an organization dictates one's stance on an issue.

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.

Somebody who spends time with undesirable people will be regarded as one of them.

To make no attempt to do something guarantees failure, so you should always try.

plural of thank you

plural of screw-you