He who does not know how to give himself an account of three thousand years may remain in the dark, inexperienced, and live from day to day

Age merely shows what children we remain.

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

I am not omniscient, but much is known to me.

We cannot possess what we do not understand

The most original authors are not so because they advance what is new, but because they put what they have to say as if it had never been said before