I fast for greater physical and mental efficiency

If in a discussion of many matters ... we are not able to give perfectly exact and self-consistent accounts, do not be surprised: rather we would be content if we provide accounts that are second to none in probability.

If we are to have any hope for the future, those who have lanterns must pass them on to others.

It is correct to make a priority of young people, taking care that they turn out as well as possible.

The object of knowledge is what exists and its function to know about reality.

Mob rule and emasculation of the wise' and 'who will watch the guardians'?

As there are misanthropists or haters of men, so also are there misologists, or haters of ideas.