"It seems certain that much of the success of Unix follows from the readability, modifiability, and portability of its software."

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[I]n constitutional adjudication some steps, which when taken were thought to approach 'the verge,' have become the platform for yet further steps. A certain momentum develops in constitutional theory and it can be a 'downhill thrust' easily set in motion but difficult to retard or stop.

— Warren E. Burger