Building Castles In The Air Quotes by Johann Gottfried Herder, Almira Hart Lincoln Phelps, William Rounseville Alger, Edward Bulwer-Lytton, 1st Baron Lytton, Henry David Thoreau, Edward Gibbon and many others.

Thus we build on the ice, thus we write on the waves of the sea; the waves roaring pass away, the ice melts, and away goes our palace, like our thoughts.
How often are the beauties of nature unheeded by man, who, musing on past ills, brooding over the possible calamities of the future, building castles in the air, or wrapped up in his own self-love and self-importance, forgets to look abroad, or looks with a vacant stare.
A sigh can shatter a castle in the air.
Leave glory to great folks. Ah, castles in the air cost a vast deal to keep up!
If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them.
There is more pleasure to building castles in the air than on the ground.
When I got to the library I came to a standstill, – ah, the dear room, what happy times I have spent in it rummaging amongst the books, making plans for my garden, building castles in the air, writing, dreaming, doing nothing.
Ever building, building to the clouds, still building higher, and never reflecting that the poor narrow basis cannot sustain the giddy tottering column.
A neurotic is a man who builds a castle in the air. A psychotic is the man who lives in it. A psychiatrist is the man who collects the rent.
Castles in the air – they are so easy to take refuge in. And so easy to build too.
To know your ruling passion, examine your castles in the air.
You may build castles in the air, and fume, and fret, and grow thin and lean, and pale and ugly, if you please. But I tell you, no man worth having is true to his wife, or can be true to his wife, or ever was, or will be so.