It seems to be expected of every pilgrim up the slopes of the mathematical Parnassus, that he will at some point or other of his journey sit down and invent a definite integral or two towards the increase of the common stock. James Joseph Sylvester
Real life seeks the gentle slopes at the back of Mount Improbable, while creationists are blind to all but the daunting precipice at the front. Richard Dawkins
Along the western slopes of the Oregon Coastal Range... come look: the hysterical crashing of tributaries as they merge into the Wakonda Auga River... Ken Kesey
Our autopilot was taking us into a very large crater, about the size of a big football stadium with steep slopes on the crater covered with very large rocks about the size of automobiles that was not the kind of place that I wanted to try to make the first landing. Neil Armstrong
Water erodes slopes. Corsican Proverb
Where it slopes down is where it slopes up. Swahili Proverb