Adventure should be 80 percent planning and 20 percent sheer audacity.
I do not know what I may appear to the world， but to myself I seem to have been only like a boy playing on the sea-shore， and diverting myself in now and then finding a smoother pebble or a prettier shell than ordinary， whilst the great ocean of truth lay all undiscovered before me.
The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed exclude, in a manner, all other arts.
Technological innovation without user thinking is just self-indulgence.
Sustainability is the future of quarrying, and we must act now.
因此，生产的最终条件是生产条件的再生产。
Love is the only force capable of transforming an enemy into a friend.