No one knows what he can do till he tries
Would you be known by everybody? Then you know nobody.
He can best avoid a snare who knows how to set one.
Necessity knows no law except to conquer.
No one knows what it is that he can do until he tries.
No one know what he can do till he tries.
A sly piece of good luck, which nobody knows of is delightful.
It is sometimes expedient to forget what you know.
You don't know what you can do until you try.