Søren Kierkegaard said this quote

Life can only be understood backwards, but it must be lived forwards.

~ Søren Kierkegaard

Life is not a problem to be solved, but a reality to be experienced.

~ Søren Kierkegaard

I see it all perfectly, there are two possible situations — one can either do this or that. My honest opinion and my friendly advice is this: do it or do not do it — you will regret both.

~ Søren Kierkegaard

If I were to wish for anything, I should not wish for wealth and power, but for the passionate sense of the potential, for the eye which, ever young and ardent, sees the possible. Pleasure disappoints, possibility never. And what wine is so sparkling, what so fragrant, what so intoxicating, as possibility!

~ Søren Kierkegaard