A Leap of faith commonly refers to believing something that cannot be touched or proved by science, for which there is no evidence. Usually the term is attributed to Søren Kierkegaard, even though he never really used it. According to Kierkegaard, such a leap involves circular reasoning, because a leap is made by faith.
ʌ WORD_BOUNDARY l iː p WORD_BOUNDARY ʌ v WORD_BOUNDARY f eɪ θ WORD_BOUNDARY k ɑ m ə n l i WORD_BOUNDARY ɹ ɪ f ɜː z WORD_BOUNDARY t ə WORD_BOUNDARY b ɪ l iː v ɪ ŋ WORD_BOUNDARY s ʌ m θ ɪ ŋ WORD_BOUNDARY ð æ t WORD_BOUNDARY k æ n ɑ t WORD_BOUNDARY b iː WORD_BOUNDARY t ʌ t̠ʃ t WORD_BOUNDARY ɔ ɹ WORD_BOUNDARY p ɹ uː v d WORD_BOUNDARY b aɪ WORD_BOUNDARY s aɪ ə n s WORD_BOUNDARY f ɔ ɹ WORD_BOUNDARY w ɪ t̠ʃ WORD_BOUNDARY ð ɛ ɹ WORD_BOUNDARY ɪ z WORD_BOUNDARY n oʊ WORD_BOUNDARY ɛ v ɪ d ə n s WORD_BOUNDARY j uː ʒ uː ə l i WORD_BOUNDARY ð ə WORD_BOUNDARY t ɜː m WORD_BOUNDARY ɪ z WORD_BOUNDARY ʌ t ɹ ɪ b j uː t ɪ d WORD_BOUNDARY t ə WORD_BOUNDARY s ɔ ɹ ə n WORD_BOUNDARY k ɪ ɹ k ɪ ɡ ɑ ɹ d WORD_BOUNDARY iː v ə n WORD_BOUNDARY ð oʊ WORD_BOUNDARY h iː WORD_BOUNDARY n ɛ v ə ɹ WORD_BOUNDARY ɹ iə l i WORD_BOUNDARY j uː z d WORD_BOUNDARY ɪ t WORD_BOUNDARY ʌ k ɔ ɹ d ɪ ŋ WORD_BOUNDARY t ə WORD_BOUNDARY k ɪ ɹ k ɪ ɡ ɑ ɹ d WORD_BOUNDARY s ʌ t̠ʃ WORD_BOUNDARY ʌ WORD_BOUNDARY l iː p WORD_BOUNDARY ɪ n v ɑ l v z WORD_BOUNDARY s ɜː k j ʊ l ə ɹ WORD_BOUNDARY ɹ iː z ə n ɪ ŋ WORD_BOUNDARY b ɪ k ʌ z WORD_BOUNDARY ʌ WORD_BOUNDARY l iː p WORD_BOUNDARY ɪ z WORD_BOUNDARY m eɪ d WORD_BOUNDARY b aɪ WORD_BOUNDARY f eɪ θ WORD_BOUNDARY