What we need in literature today are vast philosophic horizons; we need the most ultimate, the most fearsome, the most fearless 'Why?' and 'What next?'("Literature, Revolution, and Entropy") - Yevgeny Zamyatin
Liberty is the possibility of doubting, the possibility of making a mistake, the possibility of searching and experimenting, the possibility of saying No to any authority--literary, artistic, philosophic, religious, social and even political.
Metaphysics is a dark ocean without shores or lighthouse, strewn with many a philosophic wreck. - Immanuel Kant
Philosophy begins in wonder. And at the end when philosophic thought has done its best the wonder remains. - Alfred North Whitehead
Men have such a good opinion of themselves, of their mental superiority and intellectual depth; they believe themselves so skilled in discerning the true from the false, the path of safety from those of error, that they should be forbidden as much as possible the perusal of philosophic writings. - أبو حامد الغزالي