Urgent necessity prompts many to do things, at the very thoughts of which they perhaps would start at other times.
Those who'll play with cats must expect to be scratched.
Time ripens all things; no man is born wise.
One of the effects of fear is to disturb the senses and cause things to appear other than what they are.
Under a bad cloak there is often a good drinker
Whether the pitcher hits the stone or the stone hits the pitcher, it goes ill with the pitcher.