However often we turn to it [the Koran] at first disgusting us each time afresh, it soon attracts, astounds, and in the end enforces our reverence. . . . Its style, in accordance with its contents and aim is stern, grand, terrible - ever and anon truly sublime - Thus this book will go on exercising through all ages a most potent influence.

He is a man whom it is impossible to please, because he is never pleased with himself.

If you want to reach the infinite, then explore every aspect of the finite.

He who moves not forward, goes backward.

We can most safely achieve truly universal tolerance when we respect that which is characteristic in the individual and in nations, clinging, though, to the conviction that the truly meritorious is unique by belonging to all of mankind.

The Bible grows more beautiful, as we grow in our understanding of it.

As soon as any one belongs to a narrow creed in science, every unprejudiced and true perception is gone.