Natural abilities are like natural plants, that need pruning by study; and studies themselves do give forth directions too much at large, except they be bounded in by experience. Francis Bacon
And although our bodies are bounded with skin, and we can differentiate between outside and inside, they cannot exist except in a certain kind of natural environment. Alan Watts
We regard it as a certainty that the earth, enclosed between poles, is bounded by a spherical surface. Nicolaus Copernicus
What ordinary men are directly aware of and what they try to do are bounded by the private orbits in which they live; their visions and their powers are limited. C. Wright Mills
Biography is a very definite region bounded on the north by history, on the south by fiction, on the east by obituary, and on the west by tedium. Philip Guedalla
