Hardship is a man-made device because man cannot exist without passion. Religion is somewhere between fear and sex.
Philosophy [nature] is written in that great book which ever is before our eyes -- I mean the universe -- but we cannot understand it if we do not first learn the language and grasp the symbols in which it is written. The book is written in mathematical language, and the symbols are triangles, circles and other geometrical figures, without whose help it is impossible to comprehend a single word of it; without which one wanders in vain through a dark labyrinth.
When I consider the brief span of my life absorbed into the eternity which precedes and will succeed it—memoria hospitis unius diei praetereuntis (remembrance of a guest who tarried but a day)—the small space I occupy and which I see swallowed up in the infinite immensity of spaces of which I know nothing and which know nothing of me, I take fright and am amazed to see myself here rather than there: there is no reason for me to be here rather than there, now rather than then. Who put me here? By whose command and act were this place and time allotted to me?