All our contemporary philosophers perhaps without knowing it are looking through eyeglasses that Baruch Spinoza polished. Spinoza was a philosopher who earned his livelihood by grinding lenses.
Heinrich HeineThe great pulsation of nature beats too in my breast, and when I carol aloud, I am answered by a thousand-fold echo. I hear a thousand nightingales. Spring hath sent them to awaken Earth from her morning slumber, and Earth trembles with ecstasy, her flowers are hymns, which she sings in inspiration to the sun.
Heinrich Heine