We must always remember with gratitude and admiration the first sailors who steered their vessels through storms and mists, and increased our knowledge of the lands of ice in the South.

The past is a source of knowledge, and the future is a source of hope. Love of the past implies faith in the future.

To know, is to know that you know nothing. That is the meaning of true knowledge.

The learning and knowledge that we have, is, at the most, but little compared with that of which we are ignorant.

When you come to see a picture of mine, I want you to know that I'm not going to do anything that will make you uncomfortable. I want you to know that you won't be disappointed in me.

The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

The limit of man s knowledge in any subject possesses a high interest which is perhaps increased by its close neighbourhood to the realms of imagination.