“If you would be a real seeker after truth,
    it is necessary that at least once in your life you doubt, as far as
    possible, all things.” “I am all in a sea of wonders. I doubt; I fear; I
    think strange things, which I dare not confess to my own soul.” ... “Doubt isn't the
    opposite of faith; it is an element of faith.” 
 
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If you are not going to clear those damn
stupid doubts, you will dies with regret that “Why the hell did I not dare to
ask my teacher what is ………”