He cares for no one: he is the epitome of selfish.The world is a stage: play your role well.The town reminded me of my childhood vacations: both were on the beach.Barry wanted to know why I didn't respond to his text: I hadn't received it.Never forget this point: think before you speak.You can come pick me up now: I am feeling much better.I just want you to remember: two can play at that game.Second, you do not capitalize the first word in the second clause. You shouldn't use this construction to connect more than two clauses.
First, each example contains two clauses. There are two things to note in the examples below. These are clauses that can stand alone as two complete thoughts. And finally, colons can be used to separate two independent clauses.