If I want to feel as if I'm being sucked down a fathomless gloomy tunnel for hours and hours then I have a complete set of Schopenhauer at home.
Praised be the fathomless universe, for life and joy, and for objects and knowledge curious.
I will sleep no more but arise, You oceans that have been calm within me! how I feel you, fathomless, stirring, preparing unprecedented waves and storms.
Days are coloured bubbles that float upon the surface of fathomless nights.
Man is like an island set in isolation in a fathomless sea enveloped by darkness, saying that the loneliness his self knows is so utterly absolute because even he knows not his self completely.
I felt myself on the edge of the world; peering over the rim into a fathomless chaos of eternal night.