Descartes is rightly regarded as the father of modern philosophy primarily and generally because he helped the faculty of reason to stand on its own … - Arthur Schopenhauer

Philosophy of religion … really amounts to … philosophizing on certain favorite assumptions that are not confirmed at all.

For the purpose of acquiring gain, everything else is pushed aside or thrown overboard, for example, as is philosophy by the professors of philosophy.

So if you have to live amongst men, you must allow everyone the right to exist in accordance with the character he has, whatever it turns out to be: and all you should strive to do is to make use of this character in such a way as its kind and nature permit, rather than to hope for any alteration in it, or to condemn it off-hand for what it is. This is the true sense of the maxim — Live and let live. That, however, is a task which is difficult in proportion as it is right; and he is a happy man who can once for all avoid having to do with a great many of his fellow creatures.