A certain problem or obstacle only exists if one believes in it; therefore, it is possible to overcome it by denying its existence.

A sentry's challenge to an intruder.

Alternative form of there is no there there

Alternative form of there is no there there

(idiomatic) The indicated thing, person, or other matter has no distinctive identity, or no significant characteristics, or no functional center point; nothing significant exists in that place; nothing significant is occurring in that situation.

(sports) To strive to the limits of one's capacity; to give one's all when playing a game.

Alternative form of there is no there there

(idiomatic) A new person has come to power and is going to make changes.

Things said under the influence of alcohol reveal true beliefs not expressed when sober.

There is more strength in groups than individuals.