I had learnt from experience that many false opinions may be exchanged for true ones, without in the least altering the habits of mind of which false opinions are made.

There is a very real evil consequent on ascribing supernatural origin to the received maxilms of morality. That origin consecrates the whole of them and protects them from being discussed or criticized.

The disease which inflicts bureaucracy and what they usually die from is routine.

It is better to be Socrates dissatisfied than a pig satisfied.

Both teachers and learners go to sleep at their post as soon as there is no enemy in the field.

As long as justice and injustice have not terminated their ever renewing fight for ascendancy in the affairs of mankind, human beings must be willing, when need is, to do battle for the one against the other.

Human existence is girt round with mystery: the narrow region of our experience is a small island in the midst of a boundless sea. To add to the mystery, the domain of our earthly existence is not only an island of infinite space, but also in infinite time. The past and the future are alike shrouded from us: we neither know the origin of anything which is, nor its final destination.