Three things are to be looked to in a building: that it stand on the right spot; that it is securely founded; that it be successfully executed.

Energy is the basis of everything. Every Jew, no matter how insignificant, is engaged in some decisive and immediate pursuit of a goal... It is the most perpetual people of the earth.

The worst is that the very hardest thinking will not bring thoughts. They must come like good children of God and cry, "Here we are." You expend effort and energy thinking hard. Then, after you have given up, they come sauntering in with their hands in their pockets. If the effort had not been made to open the door, however, who knows when they could have come.

Man is not born to solve the problem of the universe, but to find out what he has to do; and to restrain himself within the limits of his comprehension.

When the boy begins to understand that the visible point is preceded by an invisible point, that the shortest distance between two points is conceived as a straight line before it is ever drawn with pencil and paper...the fountain of all thought has been opened to him...the philosopher can reveal him nothing new, as a geometrician he has discovered the basis of all thought.

Secrecy has many advantages, for when you tell someone the purpose of any object right away, they often think there is nothing to it.

As in Rome there is, apart from the Romans, a population of statues, so apart from this real world there is a world of illusion, almost more potent, in which most men live.