How we change what others think, feel, believe and do
Use colons before a list, either in-line (use for single words or short phrases) or a set of bullet-points (use for longer phrases and sentences).
Use the colon to separate two sentences when there is a strong contrast between the two sentences that you wish to highlight.
For a weaker separation, a semicolon might be used.
Use the colon to show cause and effect, but without having to use words such as 'because'.
There are three uses of the colon: the list, the contrastive separation and rolling the drums. (list)
Good language changes minds: poor language gets you teased. (contrastive)
I am weak: I cannot lift that box.
Colons separate, but not as strongly as periods. In speech, they provide a pause: longer than a semicolon, but shorter than a period.
The colon can act as a roll on the drums, accentuating the difference between two sentences.