James Frederick Ferrier,
Lecture, April 1858
(1883)
“ Opinions, or thoughts which a man can help thinking, have no business in philosophy. They are there under protest and only by sufferance, only until their places can be occupied by something better: occupied, that is, by thoughts which we cannot help thinking; for just as I have defined opinions as thoughts which we can help thinking, so I now define philosophy as that which is made up of thoughts which we cannot help thinking, necessary thoughts in short, the ground elements of reason. ”
