The chief error in philosophy is overstatement.

Philosophy will fail forever its primary aim because it searches for something that does not exist.

Generally speaking, the errors in religion are dangerous; those in philosophy only ridiculous.

What philosophy has lacked most of all is precision.

The disease of philosophy. - Philosophy is itself the disease for which it pretends to be the cure: the wise man does not pursue wisdom but lives his life, and therein precisely does his wisdom lie.

The word "philosophy" carries unfortunate connotations: impractical, unworldly, weird.

Philosophy destroys its usefulness when it indulges in brilliant feats of explaining away. It is then trespassing with the wrong equipment upon the field of particular sciences. Its ultimate appeal is to the general consciousness of what in practice we experience. Whatever thread of presupposition characterizes social expression throughout the various epochs of rational societyt must find its place in philosophic theory. Speculative boldness must be balanced by complete humility before logic, and before fact. It is a disease of philosophy when it is neither bold nor humble, but
merely a reflection of the temperamental presuppositions of exceptional personalities.

Philosophy can make people sick.

The chief danger to philosophy is narrowness in the selection of evidence.

In practice people who study philosophy too long become very odd birds, not to say thoroughly vicious; while even those who are the best of them are reduced by...[philosophy] to complete uselessness as members of society.

If there is a single initial error at the root of all the difficulties philosophy is involved in, it can only be the one Descartes committed when he decreed, a priori, that the method of one of the sciences of reality was valid for the whole of reality.

The passion for philosophy, like that for religion, involves a
certain danger. Although it aims to correct our behaviour
and wipe out our vices, it may — through not being handled
properly — end up merely encouraging us to carry on in
directions that we’re already naturally inclined to follow.

Utinam logica falsa tuam philosophiam totam suffodiant! May faulty logic undermine your entire philosophy!

If this is philosophy it is at any rate a philosophy that is not in its right mind.