the.com/leap of faith

means A decision to commit to something uncertain — trusting in an outcome you cannot prove or see in advance, especially without the usual rational evidence that would justify it.

from The phrase is strongly associated with the philosopher Søren Kierkegaard, who wrote about the move from reasoned doubt to religious belief as something logic alone couldn't complete — faith had to take over where evidence ran out. Kierkegaard himself wrote in Danish, and scholars debate how directly he used this exact English phrase versus related terms like 'leap' or 'leap to faith' — the popular shorthand 'leap of faith' crystallized in English retellings of his ideas. Over time it slipped out of theology entirely and into everyday use, for any moment you jump before the math checks out.