The most practical solution is a good theory.

One ought to be ashamed to make use of the wonders of science embodied in a radio set, the while appreciating them as little as a cow appreciates the botanic marvels in the plants she munches.

The strongest force in the universe is Compound Interest.

From the standpoint of daily life, however, there is one thing we do know: that we are here for the sake of each other.

This is what the painter, the poet, the speculative philosopher, and the natural scientists do, each in his own fashion.

The contemplation of this world beckoned as a liberation (...)The road to this paradise was not as comfortable and alluring as the road to the religious paradise; but it has shown itself reliable, and I have never regretted having chosen it.

Imagination is the most powerful force in the universe.