The word(s) "think" appears 68 time(s) in 67 verse(s) in Quran in Abdullah Yusuf Ali translation.

(51) They will not fight you (even) together, except in fortified townships, or from behind walls. Strong is their fighting (spirit) amongst themselves: thou wouldst think they were united, but their hearts are divided: that is because they are a people devoid of wisdom.

(52) Say: "O ye that stand on Judaism! If ye think that ye are friends to Allah, to the exclusion of (other) men, then express your desire for Death, if ye are truthful!"

(53) When thou lookest at them, their exteriors please thee; and when they speak, thou listenest to their words. They are as (worthless as hollow) pieces of timber propped up, (unable to stand on their own). They think that every cry is against them. They are the enemies; so beware of them. The curse of Allah be on them! How are they deluded (away from the Truth)!

(54) The Unbelievers think that they will not be raised up (for Judgment). Say: "Yea, By my Lord, Ye shall surely be raised up: then shall ye be told (the truth) of all that ye did. And that is easy for Allah."

(55) 'But we do think that no man or spirit should say aught that untrue against Allah.

(56) 'And they (came to) think as ye thought, that Allah would not raise up any one (to Judgment).

(57) 'But we think that we can by no means frustrate Allah throughout the earth, nor can we frustrate Him by flight.

(58) Does man think that We cannot assemble his bones?

(59) Does man think that he will be left uncontrolled, (without purpose)?

(60) And round about them will (serve) youths of perpetual (freshness): If thou seest them, thou wouldst think them scattered Pearls.