When one is frightened of the truth then it is never the whole truth that one has an inkling of.

One can defend common sense against the attacks of philosophers only by solving their puzzles, i.e., by curing them of the temptation to attack common sense.

Where two principles really do meet which cannot be reconciled with one another, then each man declares the other a fool and a heretic

There is a truth in Schopenhauer’s view that philosophy is an organism, and that a book on philosophy, with a beginning and end, is a sort of contradiction. ... In philosophy matters are not simple enough for us to say ‘Let’s get a rough idea’, for we do not know the country except by knowing the connections between the roads.

It seems to me that, in every culture, I come across a chapter headed 'Wisdom.' And then I know exactly what is going to follow: 'Vanity of vanities, all is vanity.'

Philosophy limits the thinkable and therefore the unthinkable.

Just be indipendent of the external world, so you don't have to fear for what's in it.