Not all that is presented to us as history has really happened; and what really happened did not actually happen the way it is presented to us; moreover, what really happened is only a small part of all that happened. Everything in history remains uncertain, the largest events as well as the smallest occurrence.

Of all thieves, fools are the worst; they rob you of time and temper.

The greater the knowledge, the greater the doubt.

Miracle is the pet child of faith.

Ignorant men raise questions that wise men answered a thousand years ago.

There are situations in which hope and fear run together, in which they mutually destroy one another and lose themselves in dull indifference.

They teach in academies far too many things, and far too much that is useless.