It is precisely in knowing its limits that philosophy consists.

An organized product of nature is that in which all the parts are mutually ends and means.

Upon the solution of this problem, or upon sufficient proof of the impossibility of synthetical knowledge a priori, depends the existence or downfall of metaphysics.

The human heart refuses To believe in a universe Without a purpose.

Our knowledge springs from two fundamental sources of the mind; the first is the capacity of receiving representations (receptivity for impressions), the second is the power of knowing an object through these representations (spontaneity [in the production] of concepts).

The desire which a man has for a woman is not directed towards her because she is a human being, but because she is a woman ; that she is a human being is of no concern to the man; only her sex is the object of his desires.

Heaven has given human beings three things to balance the odds of life: hope, sleep, and laughter.