That's certainly part of it, yes. But I think much more importantly, dreaming big is a muscle. You have to exercise it from time to time. Each time I come up with a grand vision and sink dozens to hundreds of hours into it, only to walk away unfinished, I learn a bit more about how to make a dream become real.
The most merciful thing in the world, I think, is the inability of the human mind to correlate all its contents. We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far. The sciences, each straining in its own direction, have hitherto harmed us little; but some day the piecing together of dissociated knowledge will open up such terrifying vistas of reality, and of our frightful position therein, that we shall either go mad from the revelation or flee from the deadly light into the peace and safety of a new dark age.
，这一点在同城约会中也有详细论述
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things like the railroads and highways) caused all of these tasks to occur on