Define Philosophy. Go!
Brevity may be the soul of wit, but it is not commonly associated with philosophy. It could be, depending on the skill of the writer. Some choice examples:
“All truth is simple…is that not doubly a lie?” –Friedrich Nietzsche
“There are three grades of criticism. Wrong. Completely Wrong. Not even Wrong.”
Shortest Philosophical Book: Our Duties to Others by Ayn Rand